ispc/ispc — pull request #647 by dbabokin (2013-10-28 19:06:37+00:00)
Title: CPU check fix

This pull request contains two things:
- fix in host CPU detection to take into account that OS may not support AVX (this affects only host CPU check in the compiler, not auto-dispatch code, which works correctly already)
- standalone program check_isa.cpp which reports current host ISA.