Added search index table + simple XML-based search interface

The XML thing is supposed to be used for auto-completion, of course. The
current search implementation is very, very stupid and simple: Just a
prefix match on the man name, and simple detection of section stuff. I
suppose it'll suffice for now.

util/cron.sh

@@ -1,6 +1,10 @@
 #!/bin/sh
 
+PSQL="psql -U manned -Awtq"
+
 ./arch.sh
 ./deb.sh ubuntu_active
 ./deb.sh debian_active
+echo "============ Updating SQL indices"
+$PGSL -f update_indices.sql