add avx2 to wahbm add
fix mem leak in wahbm16
add AVX ifdefs
Do not make AVX compile by default
add avx to sum
First changes to read and print bim files.
clenaup make
doc and test
fix merge
Merge branch 'nkindlon-master'
Removed sprintf from append_integer_to_out_buf, added bim to gt. Replaced bit unpacking in gt's print with direct masking.