Merge 'trunk' into 'arbitrary_op_nesting'

r8476@Thesaurus (orig r8463):  ribasushi | 2010-01-28 12:14:12 +0100
optional functionality for INSERT
implementation of INSERT ... RETURNING
r8549@Thesaurus (orig r8536):  ribasushi | 2010-02-04 14:36:51 +0100
 r6975@Thesaurus (orig r6974):  ribasushi | 2009-07-03 20:24:27 +0200
 New branch to work on SQLA::Test
 r6976@Thesaurus (orig r6975):  frew | 2009-07-03 20:43:17 +0200
 Add non-equality tests for ordered lists
 r6977@Thesaurus (orig r6976):  frew | 2009-07-03 20:46:43 +0200
 count(*), count(a) and count(0) should not be equivalent
 r8542@Thesaurus (orig r8529):  ribasushi | 2010-02-04 11:46:09 +0100
 Enhance/detabify
 r8546@Thesaurus (orig r8533):  ribasushi | 2010-02-04 14:23:16 +0100
 Things look saner now

r8551@Thesaurus (orig r8538):  ribasushi | 2010-02-04 14:41:59 +0100
Release ready - still need to coordinate with DBIC