K 10 svn:author V 7 davidxu K 8 svn:date V 27 2010-11-08T02:47:29.097662Z K 7 svn:log V 177 Make the size of mutex smaller. Merge m_private and m_type into single field m_mtxflags. Change type of m_spinloop and m_yield to short integer, it is enough for practical use. END