Revert "cross/gcc4*: upgrade to 4.9.2-r3"

This reverts commit d00c6003.

They fail to rebuild and I'm not sure why. Reverting for now so that
bpo is unblocked.

cross/gcc4-aarch64/APKBUILD

@@ -26,7 +26,7 @@ _cross_configure="--disable-bootstrap --with-sysroot=/usr/$CTARGET"
 pkgname=gcc4-aarch64
 pkgver=9999
 _pkgver=4.9.2
-pkgrel=3
+pkgrel=2
 pkgdesc="Stage2 cross-compiler for aarch64"
 url="http://gcc.gnu.org"
 arch="x86_64"

cross/gcc4-armhf/APKBUILD

@@ -26,7 +26,7 @@ _cross_configure="--disable-bootstrap --with-sysroot=/usr/$CTARGET"
 pkgname=gcc4-armhf
 pkgver=9999
 _pkgver=4.9.2
-pkgrel=3
+pkgrel=2
 pkgdesc="Stage2 cross-compiler for armhf"
 url="http://gcc.gnu.org"
 arch="x86_64"

cross/gcc4-armv7/APKBUILD

@@ -26,7 +26,7 @@ _cross_configure="--disable-bootstrap --with-sysroot=/usr/$CTARGET"
 pkgname=gcc4-armv7
 pkgver=9999
 _pkgver=4.9.2
-pkgrel=3
+pkgrel=2
 pkgdesc="Stage2 cross-compiler for armv7"
 url="http://gcc.gnu.org"
 arch="x86_64"