cc/gcc: add bugurl and compiler version to core gcc compiler

When building for bare-metal the core-gcc compiler is delivered
as final compiler, so the version info and bugurl is useful
in the core compiler as well.

Signed-off-by: Remy Bohmer <linux@bohmer.net>

 reporter_name="YEM"

 reporter_url="http://ymorin.is-a-geek.org/"

 reporter_comment="EXPERIMENTAL Super-H sh4 sample."