6893701: compiler/6877254/Test.java fails because it combines -XX:+UseConcMarkSweepGC with other GC
Summary: Remove explicit GC flags in regression tests
Reviewed-by: never, ysr
6917698: os::is_allocatable Zero fix for 32-bit platforms
Summary: Recent changes call os::is_allocatable which was not implemented in Zero.
Reviewed-by: twisti
Contributed-by: Edward Nevill <ed@camswl.com>