K 10 svn:author V 4 tijl K 8 svn:date V 27 2013-08-21T19:02:34.292274Z K 7 svn:log V 482 MFC r241077: - Simplify the implementation of atomic_compare_exchange_strong_explicit. - Evaluate the memory order argument in atomic_fetch_*_explicit macros. - Implement atomic_store_explicit using atomic_exchange_explicit instead of a plain assignment. MFC r241190: Define clang feature test macro __has_extension. It's used in stdatomic.h. MFC r254497: Change the return type of the fallback implementation of the atomic_compare_exchange_* macros in stdatomic.h to _Bool. END