calls.
- Undo mistake in copy order for submount path introduced by rev 11 patch.
- add check for alternate libxml2 library for libxml2 tsd workaround.
- add check for alternate libtirpc library for libtirpc tsd workaround.
- cleanup configure defines for libtirpc.
- add WITH_LIBTIRPC to -V status report.
- add libtirpc-devel to BuildRequires.
- add nfs mount protocol default configuration option.
