[Uim] uim-py: Adding idioms to PY.scm

[David Oftedal]

After editing loader.scm, run:

su
<password>
gtk-query-immodules-2.0 > /etc/gtk-2.0/gtk.immodules

I do this all the time, to install input methods such as vikingrunes.scm 
and upsidedown.scm. ;)

-David O.