Merge 'void_populate_resultset_cond' into 'trunk'

r7749@Thesaurus (orig r7738):  norbi | 2009-09-28 22:01:39 +0200
Created branch 'void_populate_resultset_cond': Fixing a bug: $rs->populate in void context does not use the conditions from $rs.
r7751@Thesaurus (orig r7740):  norbi | 2009-09-28 23:26:06 +0200
 r7935@vger:  mendel | 2009-09-28 23:25:52 +0200
 Undid the previous tweaks to the already existing tests and added new tests instead.

r7928@Thesaurus (orig r7916):  ribasushi | 2009-11-16 08:48:42 +0100
Change plan
r7956@Thesaurus (orig r7944):  ribasushi | 2009-11-24 10:10:49 +0100
Better naming and a bit leaner implementation. Main idea remains the same