Merge 'back-compat' into 'current'

r7400@hlagh (orig r7399):  ilmari | 2009-08-26 19:07:47 -0400
Branch for back-compat work
r7401@hlagh (orig r7400):  ilmari | 2009-08-26 19:09:44 -0400
Initial back-compat code
r21089@hlagh (orig r7835):  caelum | 2009-11-01 05:52:40 -0500
fix relbuilder initialization (left over from pull)
r21101@hlagh (orig r7847):  caelum | 2009-11-09 14:04:52 -0500
this stuff does not work yet
r21102@hlagh (orig r7848):  caelum | 2009-11-09 18:12:58 -0500
backcompat TODO
r21174@hlagh (orig r7920):  caelum | 2009-11-16 19:39:50 -0500
fix name of compat relbuilder
r21612@hlagh (orig r7971):  caelum | 2009-11-28 03:17:05 -0500
backcompat mode now runs more than once
r21614@hlagh (orig r7973):  caelum | 2009-11-28 03:46:00 -0500
make dynamic schemas 0.04006 mode by default
r21615@hlagh (orig r7974):  caelum | 2009-11-28 05:38:41 -0500
backcompat tests now run, but fail
r21682@hlagh (orig r7977):  caelum | 2009-11-28 20:56:06 -0500
minor changes
r21683@hlagh (orig r7978):  caelum | 2009-11-28 23:30:08 -0500
backcompat common tests now pass
r21684@hlagh (orig r7979):  caelum | 2009-11-29 00:03:34 -0500
fix regular common tests
r21685@hlagh (orig r7980):  caelum | 2009-11-29 00:23:32 -0500
update TODO
r21695@hlagh (orig r7990):  caelum | 2009-11-29 19:18:50 -0500
load external classes for dynamic schemas only
r21712@hlagh (orig r7993):  caelum | 2009-11-30 08:51:11 -0500
set old version only on Schema.pm in backcompat mode
r22272@hlagh (orig r8161):  caelum | 2009-12-24 01:49:54 -0500
replacing ::Base with ::Compat now, instead of just unshifting to @ISA, t/backcompat/0.04006/20invocations.t now passes
r22276@hlagh (orig r8165):  caelum | 2009-12-24 04:24:08 -0500
fix POD coverage and t/backcompat/0.04006/23dumpmore.t
r22277@hlagh (orig r8166):  caelum | 2009-12-24 06:03:15 -0500
implemented "naming" accessor, got rid of Loader/Compat/v0_040.pm
r22282@hlagh (orig r8171):  caelum | 2009-12-24 07:54:19 -0500
added Manual/UpgradingFromV4.pod
r22283@hlagh (orig r8172):  caelum | 2009-12-24 10:13:03 -0500
pod fixes for UpgradingFromV4