more misc. bugfixes, plus INTERNALS update

Patches applied:

 * walters@rhythmbox.org--2003b/rhythmbox--mainline--0.7--patch-185
   attempt to update INTERNALS

 * walters@rhythmbox.org--2003b/rhythmbox--mainline--0.7--patch-186
   don't save default float/double values to rhythmdb.xml either

 * walters@rhythmbox.org--2003b/rhythmbox--mainline--0.7--patch-187
   always queue deletion updates even if the entry isn't in the model now