Created MIPS and ARM GCC-Final files & cleanup
x86 is no longer common with MIPS and ARM for GCC-Final so it got its own
GCC-Final file. In order to reduce duplication between x86 GCC-Final
and the common GCC-Final, now MIPS and ARM also have their own GCC-Final
files, too.
In this way, everything that's common to all architectures goes in the
common GCC-Final file and each arch can do their own thing.
This will become more important once we start building GCC for a specific
processor, the ARM and MIPS configure lines will diverge.
* PLEASE NOTE *: This commit un-breaks GCC-Final for x86.
Feel free to merge.
