Merge 'trunk' into 'prefetch_bug-unqualified_column_in_search_related_cond'

r7884@Thesaurus (orig r7872):  ribasushi | 2009-11-13 00:13:40 +0100
The real fix for the non-introspectable condition bug, mst++
r7885@Thesaurus (orig r7873):  ribasushi | 2009-11-13 00:24:56 +0100
Some cleanup
r7887@Thesaurus (orig r7875):  frew | 2009-11-13 10:01:37 +0100
fix subtle bug with Sybase database type determination

diff --cc lib/DBIx/Class/ResultSet.pm
Simple merge

diff --cc lib/DBIx/Class/Storage/DBI.pm
index aab6f31,0de26f6..e11a8e9
--- 1/lib/DBIx/Class/Storage/DBI.pm
--- 2/lib/DBIx/Class/Storage/DBI.pm
+++ b/lib/DBIx/Class/Storage/DBI.pm
@@@ -1590,9 -1623,9 +1623,9 @@@ sub _strip_cond_qualifiers 
  
  # We were sent here because the $rs contains a complex search
  # which will require a subquery to select the correct rows
- # (i.e. joined or limited resultsets)
+ # (i.e. joined or limited resultsets, or non-introspectable conditions)
  #
 -# Genarating a single PK column subquery is trivial and supported
 +# Generating a single PK column subquery is trivial and supported
  # by all RDBMS. However if we have a multicolumn PK, things get ugly.
  # Look at _multipk_update_delete()
  sub _subq_update_delete {