* MIPS: dropped gas_std_regname, its functionality merged into std_regname. This fixes register names in non-instructions (reg. allocation information, variable locations, etc.) and makes assembler listings more readable.

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@27986 3ad0048d-3df7-0310-abae-a5850022a9f2