cc/gcc: do not consume parameters when parsing them

The current construct consumes the parameters while we parse them.
Change this to a construct that does not consume the parameters.

This has no impact on gcc, but is done for homogeneity with other
components (eg. glibc).

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

reporter_name="Kevin Cernekee"

reporter_url="http://sourceware.org/ml/crossgcc/2011-09/msg00037.html"

reporter_comment="MIPS SDE-compatible toolchain"