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

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

r6195@haferschleim (orig r965):  nigel | 2006-02-24 13:11:11 +0100
Minor documentation fix for find. Removed some EOL spacing
r6196@haferschleim (orig r966):  nigel | 2006-02-24 13:16:06 +0100
Reverted previous unitentional change to Accessor.pm
r6207@haferschleim (orig r970):  jguenther | 2006-02-26 04:01:41 +0100
Added DBIx::Class::Schema::txn_do()
r6223@haferschleim (orig r975):  matthewt | 2006-02-26 20:52:16 +0100
Added Manual::Example from sc_
r6224@haferschleim (orig r976):  matthewt | 2006-02-26 20:57:47 +0100
Tweak to Manual::Example
r6225@haferschleim (orig r977):  jguenther | 2006-02-27 23:48:48 +0100
Fixed txn_do to check that $coderef is actually a code ref, and wrote parameter check tests
r6226@haferschleim (orig r978):  jguenther | 2006-02-27 23:50:49 +0100
Fixed a typo
r6258@haferschleim (orig r988):  gphat | 2006-02-28 22:23:31 +0100
Fix multi-namespace load_classes example in Manual/SchemaIntro