added stest.c
added Makefile for blas tests
added blas test driver
added check_saxpy.c
added check_srotg.c
added dtest.c
fixed abs
added check_isamax
added check_sasum.c
added check_srotmg
added check_sscal.c
added check_sdot.c
added check_saxpy
added check_copy.c
added check_sswap
updated blas_tests
added more tests
updated check_srotm.c
added another test
updated check_sdsdot