add benchmark for ger
added symv benchmark
added a sample plot-filter scripts and a header file for gnuplot
allow to set custom value for ?GEMM_DEFAULT_UNROLL_MN, optimizations for syrk
optimizations for trmm
optimizations for trsm
optimized zgemm kernel for haswell
Merge pull request #420 from wernsaar/develop

Optimizations for HASWELL