cc/gcc: update Linaro GCC revisions to 2012.12

Update Linaro GCC with the latest available revisions.

Signed-off-by: "Benoît Thébaudeau" <benoit.thebaudeau@advansee.com>
Message-Id: <acf52a6302c475ff850e.1355760853@advdt005-ubuntu>
Patchwork-Id: 206905

 # Compute Alpha-specific values

 CT_DoArchTupleValues () {

     # The architecture part of the tuple:

     CT_TARGET_ARCH="${CT_ARCH}${CT_ARCH_ALPHA_VARIANT}"

 }