K 10 svn:author V 7 attilio K 8 svn:date V 27 2012-01-31T01:45:20.082264Z K 7 svn:log V 386 MFC r227758,227759,227788: Introduce macro stubs in the mutex and sxlock implementation that will be always defined and will allow consumers, willing to provide options, file and line to locking requests, to not worry about options redefining the interfaces. This is typically useful when there is the need to build another locking interface on top of the mutex one. Requested by: kib END