CMake - Improve compiler checks for intrinsics and prefix definitions with COMPILER_
reference: https://github.com/xiph/opus/issues/198
set(SSE1_SUPPORTED 1 PARENT_SCOPE)
COMPILER_SSE1_SUPPORTED etc
reference: https://github.com/xiph/opus/issues/198
set(SSE1_SUPPORTED 1 PARENT_SCOPE)
COMPILER_SSE1_SUPPORTED etc