Avoid comdats
Avoid comdats

Fixes ability to generate runtimes that use HVX on OS X. They won't
work, but at least you can generate them now :)


Former-commit-id: 2b1e5d39776891e68a2f3497914e64d345c6f22b
Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide