- source_group: Fix regression in relative FILES
- clang: Restore support for clang-cl on non-Windows hosts
- fileapi: Fix codemodel target install destination for cross-dir rules
- clang: Work around toolchain file use of internal CMake variables
- FindGLEW: Fix typo in verbose log message
- find_package: Fix prefer-config mode to not fail on missing optional package
Signed-off-by: Pierre-Yves <pyu@riseup.net>