use separate CK_CXX_COMPILER_STDLIB and CK_COMPILER_OWN_LIB_LOC for clarity and fewer warnings
use separate CK_CXX_COMPILER_STDLIB and CK_COMPILER_OWN_LIB_LOC for clarity and fewer warnings

ctuning/ck-env,ctuning/ck-env,ctuning/ck-env,ctuning/ck-env,ctuning/ck-env,ctuning/ck-env,ctuning/ck-env,ctuning/ck-env