* psxcleanup/system.h: Fix typo.
* Makefile.am, configure.ac: Add new test for exercising pushing
and popping a clean up handler without actually executing it.
* psxcleanup01/.cvsignore, psxcleanup01/Makefile.am,
psxcleanup01/init.c, psxcleanup01/psxcleanup01.doc,
psxcleanup01/psxcleanup01.scn: New files.
