added gemm benchmark and modified Makefile for benchmark
added benchmark for symm
added trmm benchmark
added trsm benchmark
added syrk benchmark
added syr2k benchmark
add hemm benchmark
added herk benchmark
added her2k benchmark
added conf option for number of loops
modified pathes to atlas, mkl and acml
segment violation in sgemv kernels
added additional test value
Merge pull request #413 from wernsaar/develop

additional benchmarks