gconf_engine_remove_dir and gconf_engine_remove_all_entries

[Colm Smyth <Colm Smyth ireland sun com>]

Hi,

Although the backends and gconf-sources code exists to offer
a remove_dir and remove_all_entries API, the code to make
these available is incomplete. The CORBA stubs for remove_dir
are there, but that's it.

I'll write and putback the code for gconf_engine_remove_dir
along with my changes to support scoping and subsetting of databases,
but it would be fantastic if someone else would write the
client-side code and the CORBA code for remove_all_entries.

Colm.