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>

reporter_name="Harold Grovesteen"

reporter_url="http://sourceware.org/ml/crossgcc/2009-11/msg00052.html"

reporter_comment=""