qa/GNUmakefile.install: cleanup after making pcpqa.pp
qa/GNUmakefile.install: cleanup after making pcpqa.pp

The selinux makefile that is used leaves behind several files in
./tmp that are some sort of a cache for repeated executions ... we
don't need these files once pcpqa.pp has been created.

adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp