Merge for BUG#3759 which was missing from the main tree for some reason.

BitKeeper/etc/logging_ok:
  auto-union
sql/item_cmpfunc.h:
  Auto merged
mysql-test/r/select.result:
  Merge for BUG#3759
mysql-test/t/select.test:
  Merge for BUG#3759

BitKeeper/etc/logging_ok

@@ -9,6 +9,7 @@ acurtis@pcgem.rdg.cyberkinetica.com
 ahlentz@co3064164-a.rochd1.qld.optusnet.com.au
 akishkin@work.mysql.com
 antony@ltantony.dsl-verizon.net
+antony@ltantony.rdg.cyberkinetica.homeunix.net
 arjen@bitbike.com
 arjen@co3064164-a.bitbike.com
 arjen@fred.bitbike.com
@@ -20,8 +21,10 @@ bar@mysql.com
 bell@laptop.sanja.is.com.ua
 bell@sanja.is.com.ua
 bk@admin.bk
+brian@brian-akers-computer.local
 carsten@tsort.bitbybit.dk
 davida@isil.mysql.com
+dellis@goetia.(none)
 dlenev@brandersnatch.localdomain
 dlenev@build.mysql.com
 dlenev@mysql.com
@@ -33,6 +36,7 @@ greg@mysql.com
 guilhem@mysql.com
 gweir@build.mysql.com
 gweir@work.mysql.com
+hartmut@mysql.com
 heikki@donna.mysql.fi
 heikki@hundin.mysql.fi
 heikki@rescue.
@@ -43,7 +47,9 @@ hf@genie.(none)
 igor@hundin.mysql.fi
 igor@rurik.mysql.com
 ingo@mysql.com
+jani@a193-229-222-105.elisa-laajakaista.fi
 jani@a80-186-24-72.elisa-laajakaista.fi
+jani@a80-186-41-201.elisa-laajakaista.fi
 jani@dsl-jkl1657.dial.inet.fi
 jani@hynda.(none)
 jani@hynda.mysql.fi
@@ -66,6 +72,7 @@ kostja@oak.local
 lenz@kallisto.mysql.com
 lenz@mysql.com
 marko@hundin.mysql.fi
+matt@mysql.com
 miguel@hegel.(none)
 miguel@hegel.br
 miguel@hegel.local
@@ -133,6 +140,7 @@ tim@bitch.mysql.fi
 tim@black.box
 tim@hundin.mysql.fi
 tim@sand.box
+tim@siva.hindu.god
 tim@threads.polyesthetic.msg
 tim@white.box
 tim@work.mysql.com