* device-*: add postmarketos-base to depends
* aportgen: add postmarketos-base to depends
* Add test case
* postmarketos-base: Don't depend on devicepkg
* msm-fb-refresher: Enable service in post-install

We don't use 'arch="all"' in our kernels anymore (that does not make sense,
since each arch needs its own kernel config). This patch fixes the menuconfig
code to work with multiple values in the "arch" field.

It lacked some hardware config, such as the USB switch.
With this change, I was able to SSH over the USB network.

I based this off of LineageOS 14.1's config file from its
build root. I think we were missing the secondary config
file
(TARGET_KERNEL_VARIANT_CONFIG := msm8930_serrano_eur_lte_defconfig
in BoardConfig.mk).

Here are the changes necessary in pmbootstrap to make proprietary
software installed onto the device (firmware and userspace drivers)
optional (#756). To full close the issue, we need to apply this concept
to all device packages we already have in a follow-up PR.

Changes:
* New config file options nonfree_firmware and nonfree_userland, which
  we ask for during "pmbootstrap init" if there are non-free components
  for the selected device.
* We find that out by checking the APKBUILD's subpakages: The non-free
  packages are called $pkgname-nonfree-firmware and
  $pkgname-nonfree-userland.
* During "pmbootstrap init" we also show the pkgdesc of these
  subpackages. Parsing that is implemented in
  pmb.parse._apkbuild.subpkgdesc(). It was not implemented as part of
  the regular APKBUILD parsing, as this would need a change in the
  output format, and it is a lot *less* code if done like in this
  commit.
* pmb/parse/apkbuild.py was renamed to _apkbuild.py, and
  pmb/install/install.py to _install.py: needed to call the function in
  the usual way (e.g. pmb.parse.apkbuild()) but still being able to
  test the individual functions from these files in the test suite.
  We did the same thing for pmb/build/_package.py already.
* Install: New function get_nonfree_packages() returns the non-free
  packages that will be installed, based on the user's choice in
  "pmbootstrap init" and on the subpackages the device has.
* Added test cases and test data (APKBUILDs) for all new code,
  refactored test/test_questions.py to have multiple functions for
  testing the various questions / question types from
  "pmbootstrap init" instead of having it all in one big function.
  This allows to use another aport folder for testing the new
  non-free related questions in init.

* linux-postmarketos-lts 4.14.21
* linux-postmarketos-stable 4.15.5

It boots and display/touchscreen partially work
(the framebuffer only fills a part of the screen).

The message appears 20 or so times in a row when setting up a new
chroot. Right now we log it into the debug log (which is what
"pmbootstrap log" and "pmbootstrap --details-to-stdout" show). This
is annoying for normal pmbootstrap usage, and really clutters up the
Travis output.

This commit changes the log level to verbose, so it only shows up
when "-v" is passed to pmbootstrap.

* gp-peak: Add support for osk-sdl
* gp-peak: Move non-kernel files to device-gp-peak
* gp-peak: Add audio support
Manually trigger the udev rules for audio devices and add the default user to the audio group

The hook flashes every LED it can find, as well as the vibration motor.
More paths are probably necessary to support more devices and kernels.

x86 is also supported, not just x86_64

* linux-postmarketos-mainline 4.16-rc2
* linux-postmarketos-stable 4.15.4
* linux-postmarketos-lts 4.14.20

Without this fix, `pmbootstrap zap -m` fails with:

  File "/home/user/code/pmbootstrap/pmb/__init__.py", line 61, in main
    getattr(frontend, args.action)(args)
  File "/home/user/code/pmbootstrap/pmb/helpers/frontend.py", line 322, in zap
    distfiles=args.distfiles)
  File "/home/user/code/pmbootstrap/pmb/chroot/zap.py", line 54, in zap
    zap_mismatch_bins(args, confirm, dry)
  File "/home/user/code/pmbootstrap/pmb/chroot/zap.py", line 110, in zap_mismatch_bins
    if pkgname != bin_data["pkgname"]:
KeyError: 'pkgname'

* The APKINDEX parser used to return a dictionary with one package for
  a given package name. This works for the installed packages database,
  because there can only be one provider for a package. But when
  parsing packages from binary repositories, we need to support
  multiple providers for one package. It is now possible to get a
  dictionary with either multiple providers, or just a single provider
  for each package.
* Dependency parsing logic has been adjusted, to support multiple
  providers. For multiple providers, the one with the same package
  name as the package we are looking up is prefered. If there is none
  (eg. "so:libEGL.so.1" is provided by "mesa-egl"), it prefers packages
  that will be installed anyway, and after that packages that are
  already installed. When all else fails, it just picks the first one
  and prints a note in the "pmbootstrap log".
* Added testcases for all functions in pmb.parse.apkindex and
  pmb.parse.depends
* pmbootstrap chroot has a new "--add" parameter to specify packages
  that pmbootstrap should build if neccessary, and install in the
  chroot. This can be used to quickly test the depencency resolution
  of pmbootstrap without doing a full "pmbootstrap install".

Fixes #1122.

* Added a ui package for i3wm

* Added n900 specific i3wm config

* Fixed mixed tabs and spaces in i3status.

This is also the first commit made on an n900
running postmarketOS.

* Removed redundant X11

* Use lock.sh to lock the device

* Windows management improvements

* bump pkgver

* Fix device-nokia-n900 checksums

* Fixed path in the i3wm split package

* New "pmbootstrap build --src=/local/source/path hello-world" syntax
* The local source path gets mounted inside the chroot
* From there, a copy of the source code gets created with rsync (so
  we can write into the source folder if necessary, for better
  compatibility with all kinds of APKBUILDs)
* After the aport gets copied into the chroot before building (as
  usually), we extend the APKBUILD with overrides to make it use
  mountpoint's source instead of downloading the package's source
  from the web as usually
* The package built with the local source gets _pYYYYMMDDHHMMSS
  appended to the pkgver
* linux-postmarketos-mainline: use $builddir, fix patch checksum

* Added modified wireguard APKBUILD from alpine
* Add required kernel options to postmarketos-stable

Adds a /etc/local.d/ script in order to work around
udev being broken with this kernel.

Closes #1223.

Binary packages are rebuilding. If your kernel is not rebuilt yet, and
you don't want to build it yourself, just checkout the previous
pmbootstrap commit.

This commit also changes the arch from the postmarketOS kernels from
"all" to the ones where we actually have a kernel config.

Fixes #1229.

The 'necessary_kconfig_options' dictionary in pmb/config/__init__.py
now has the different architectures (space separated) as the keys and
the dictionary, which matches kernel config options and their
expected value, as its value.
For that purpose, the 'check' function in pmb/parse/kconfig.py was
modified, so that it takes the architecture from the kconfig filename
and uses it to find the needed kernel config options.
Closes #1218.

We have two methods of cross-compiling:
* native: everything runs with the host architecture, QEMU is not
  involved. This is the fastest, but requires the build system to be
  working with it. We use this for all linux-* packages currently.
* distcc: everything runs through QEMU emulating the target arch,
  *except* for the compiler. This is the most compatible approach
  working with all packages.

When compiling `linux-*` packages natively, kernel scripts needed
during the build process get generated. Some of these are C files that
get compiled as executables. In native mode, these get compied to the
native architecture, in distcc mode to the target architecture.

The problem is, that we need these scripts compiled for the target
architecture in the kernel's dev package in order to compile kernel
modules outside of the kernel's package (e.g. wireguard).

It is not possible to just rewrite this logic to generate target-arch
binaries when running in native mode, because these binaries require
musl-dev, linux-headers and some other packages to be installed for the
target architecture inside the native chroot.

We solve this by introducing a new `kernel-scripts` package. which
contains just the binary scripts. In case the dev package was
cross-compiled, it depends on `kernel-scripts` and symlinks these
binaries. The `kernel-scripts` package always gets compiled in distcc
mode since it does not have a `linux-` prefix.

Fixes #1230.

Fixes #1227.
This also updates the hash in linux-postmarketos-mainline, because the
hash changed upstream (they updated their git version server-side?).

Fixes #1124.

It boots and SSH works but the screen stays black.

This port includes:
* Weston including touch and WiFi (using e.g. firmware-samsung-i9305) works.
* Touchscreen calibration for osk-sdl
* Sound configuration
* Udev rules for touch and pen, pen works!