Thanks to Joseph Power for finding this.

In practice the changeset is 'inspired' by vosremoval-mutex.diff
but was essentially redone manually

Most OClearableGuard of the Solar Mutex could be converted
to a simple SolarMutexGuard.
a couple of site were converted to a SolarMutexClearableGuard,
were converting to a SolarMutexGuard would have made the code more
convoluted.

This is another piece of the change from /opt/libreoffice3 to
/opt/libreoffice.

Conflicts:
	desktop/source/app/app.cxx