Fix logic that looks for shift builtins.
Merge pull request #651 from jbrodman/shiftfix

Fix logic that looks for shift builtins.
Support using pointer arithmetic as lvalue
Add unittest.
More stds compliant.  VS doesn't like non constant length local arrays.
Merge pull request #653 from jbrodman/master

Fix for Visual Studio compilation error.
Merge pull request #652 from jbrodman/ptrarithlvalues

Fix a case for a missing lvalue for pointer arithmetic
Windows support
Merge pull request #655 from ifilippov/windows

Windows support in alloy
changed back to #define ISPC_FORCE_ALIGNED_MEMORY aligned_ld/st #else unaligned ld/st #endif. However load<64>/store<64> will still be unaliged w/o this define because of fails related to the issue #632
Merge branch 'master' into knc-fix
Merge pull request #656 from egaburov/knc-fix

restored ISPC_FORCE_ALIGNED_MEMORY
Merge branch 'master' into nvptx