Merge 'trunk' into 'DBIx-Class-current'

Merge 'trunk' into 'DBIx-Class-current'

r9713@obrien (orig r1493):  purge | 2006-04-19 19:57:26 +0100
=Test for Data::Dumper::Sortkeys incompatibility (export DATA_DUMPER_TEST=1).
r9714@obrien (orig r1494):  matthewt | 2006-04-19 21:18:18 +0100
Fix to copy
r9715@obrien (orig r1495):  matthewt | 2006-04-19 21:47:36 +0100
fixup for Dumper brain damage
r9718@obrien (orig r1496):  matthewt | 2006-04-19 23:01:31 +0100
make set_from_related handle undef
r9719@obrien (orig r1497):  matthewt | 2006-04-20 00:19:13 +0100
nuked last remaining each uses. just because.
r9720@obrien (orig r1498):  matthewt | 2006-04-20 00:45:47 +0100
Changes for 0.06002