don't call add_vector_typedefs() for headers
don't call add_vector_typedefs() for headers


Former-commit-id: aab9e5752e60fbcd2a397b1d9e6ec11ccaea3700
Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide