New dgemm and sgemm Kernel for BULLDOZER

dgemm reaches now 96 GFLOPS
sgemm reaches now 166 GFLOPS

I had to introduce new unroll variables for CGEMM3M, ZGEMM3M and XGEMM3M.
Please see the changes in getarch_2nd.c, Makefile.system and Makefile.L3

Best regards,

Werner