Log Message:
Update to 1.23:
1.23 Thu Dec 29 2005
	- In moving from CVS to SVN I forgot to bring ::Parent with it.
	  (The tests passed spuriously because it found the old version.)
	- Upgraded Module::Install and shrunk Makefile.PL again to reflect
	  the new features in it.
	- Upgraded List::Util dependency to 1.18 because of memory leaks
	  and problems with non XS versions of functions we use.

1.22 Wed Dec 21 2005
	- Apparently generating spurious warnings on Perl 5.8.1
	  on Mac OS X when using SVK. Tentatively applying solution.
	- No change in functionality on any platform.
	- No need to upgrade unless you are seeing lots of warnings.
	- Rolled back the File::Spec dependency from 0.82 to 0.80
	  to avoid needless upgrades in some 5.005 and 5.006 situations.
	- Moved from older CVS repository to newer SVN repository
	- Updated Makefile.PL to Module::Install 0.45