Slowdown when running gconftool-2 --makefile-(un)install-rule

[Jan de Groot <jan jgc homeip net>]

In archlinux, we used gconftool-2 --makefile-uninstall-rule on
pre_upgrade of all our packages with schema files, while using
--makefile-install-rule on post_upgrade or post_install on all schema
files installed by the package.
While such a process takes 10-15 seconds max per package to install with
gconf 2.12, it takes over a minute or two to install packages with quite
some GConf schemas on 2.13.

I guess the merged database things cause this big slowdown, as it
generates a merge on every run of gconftool-2. What options do we have
to speed this process up a bit?