gcc: add a CC_GCC_HAS_PKGVERSION_BUGURL option

This patch adds a blind option CC_GCC_HAS_PKGVERSION_BUGURL to test the support
of --with-pkgversion and --with-bugurl by GCC's configure.

Signed-off-by: "Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>

# Alpha specific configuration file

## select ARCH_SUPPORTS_32

## select ARCH_DEFAULT_32

## select ARCH_USE_MMU

## select ARCH_SUPPORT_CPU

## select ARCH_SUPPORT_TUNE

##

## help The Alpha architecture.