Merge 'trunk' into 'joined_count'

r6290@Thesaurus (orig r6289):  ribasushi | 2009-05-17 00:06:40 +0200
Rewrite SqlMakerTest to fully depend on SQLA::Test
Allow is_same_sql_bind to accept an arrayrefref instead of any pair of $sql, \@bind
r6299@Thesaurus (orig r6298):  frew | 2009-05-18 18:16:44 +0200
Fix order by clauses for MSSQL