cmssw-tool-conf: add pacparser-toolfile

Create pacparse-toolfile and add to cmssw-tool-conf. frontier_client
loads it via dlopen(), thus we need ${PACPARSER_BASE}/lib available
in library search path.

Signed-off-by: David Abdurachmanov <davidlt@cern.ch>
pacparser: disable parallel compilation

Parallel compilation does not work w/ parcparser. Disable it.

Signed-off-by: David Abdurachmanov <davidlt@cern.ch>