+TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
+ makefiles for portability to HP-UX and POSIX correctness.
+
+PP/01 Permit LOOKUP_foo enabling on the make command-line.
+ Also via indented variable definition in the Makefile.
+ (Debugging by Oliver Heesakkers).
+
+PP/02 Restore caching of spamd results with expanded spamd_address.
+ Patch from author of expandable spamd_address patch, Wolfgang Breyha.
+
+PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
+ Improves build reliability. Fix from: Frank Elsner
+
+NM/02 Fix wide character breakage in the rfc2047 coding
+ Fixes bug 1064. Patch from Andrey N. Oktyabrski
+
+NM/03 Allow underscore in dnslist lookups
+ Fixes bug 1026. Patch from Graeme Fowler
+
+PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
+ Code patches from Adam Ciarcinski of NetBSD.
+
+NM/04 Fixed exiqgrep to cope with mailq missing size issue
+ Fixes bug 943.
+
+PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
+ is logged, to avoid truncation. Patch from John Horne.
+
+PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
+ Patch from Jakob Hirsch.
+
+PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
+ SQL string expansion failure details.
+ Patch from Andrey Oktyabrski.
+