8020433: Crash when using -XX:+RestoreMXCSROnJNICalls
Summary: remove StubRoutines::x86::_mxcsr_std and use StubRoutines::_mxcsr_std
Reviewed-by: jrose
8007898: Incorrect optimization of Memory Barriers in Matcher::post_store_load_barrier()
Summary: generate one "fat" membar instead of set of barriers for volitile store
Reviewed-by: roland
8020791: [TESTBUG] runtime/jsig/Test8017498.sh failed to compile native code
Summary: Added -DLINUX to the gcc command and improved the .sh script
Reviewed-by: dcubed, dholmes, minqi