PATCH: rename CC to GCC in gcc.c comments

[Mark Mitchell]

Ben Elliston wrote:

> Tested with a bootstrap on x86_64-linux.  OK for the trunk?

> 2009-04-07  Ben Elliston  <bje@au.ibm.com>
> 
>         * gcc.c: Replace `CC' with `GCC' throughout.

OK.

-- 
Mark Mitchell
CodeSourcery
mark@codesourcery.com
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