merge in rhythmdb

With this commit, the first pass at RhythmDB is commited.
It involves a ton of changes, as you can see from the
log-for-merge output below.  I will attempt to summarize
these changes eventually in the INTERNALS document, rather
than this changelog.

Patches applied:

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-35
   s/name/title/

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-36
   more s/name/title/

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-37
   even more s/name/title/

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-38
   first attempt at a query model

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-39
   remove some signals, add back in external query func

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-40
   merge with mainline

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-41
   much more hackery on refcounting/queueing stuff

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-42
   really remove gdk locking

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-43
   more attempt at deletion handling

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-44
   don't unlock db after destroy

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-45
   attempt to use RhythmDBQueryModel

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-46
   Work on making the query fully asynchronous

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-47
   use g_print instead of rb_debug for tests

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-48
   fix up querying, fix g_prints; we now pass the query test suite

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-49
   updates for new query interface

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-50
   add iter_from_entry method

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-51
   cool hack for testing both sync and async queries

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-52
   much more hackery on the entry view

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-53
   more work on moving to RBEntryModel

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-54
   make entry view compile

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-55
   a few hacks to make the whole thing compile, for now

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-56
   work on implementing property queries again

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-57
   much hacking up of the tree, does not compile yet

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-58
   even more hackery, working on view test

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-59
   don't include test-rhythmdb-view executable, fix up some entry view stuff

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-60
   add cvsignore for views data

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-61
   entry view test appears to work

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-62
   add data/views dir

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-63
   merge with mainline

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-64
   update gsequence

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-65
   yet more hacking.

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-66
   use cell_data func in property view

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-67
   hack up the library a bit

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-68
   one night's hackery

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-69
   remove am_dead bits, thread is now a daemon thread

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-70
   hack up the library to use rhythmdb

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-71
   merge with mainline

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-72
   kill off walker thread, make lots more stuff compile

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-73
   make player widget compile, updates all over the place

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-74
   make clipboard compile

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-75
   make playlist manager compile (but VERY unlikely to actually work)

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-76
   she actually compiles!

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-77
   she boots!

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-78
   misc bugfixes. poll model, fix up exiting etc

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-79
   fix up query API, do query in library source, etc

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-80
   she PLAYS MUSIC!

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-81
   fix sorting order bits

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-82
   fix sorting order bits

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-83
   attempt to make property views work, not quite going yet though

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-84
   make All display show up

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-85
   make double-clicking on property sorta work

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-86
   make entry refcount start at 1 (doh!)

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-87
   don't lose if we're setting playing_entry to NULL

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-88
   go go gadget property view!  (also make saving/loading db work)

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-89
   rearrange source tree/dependencies to remove circular depends

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-90
   make property view queries async

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-91
   ensure property displays unique values

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-92
   more work on async property views

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-93
   stop in debugger on RhythmDB errors too

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-94
   add missing break in property setting

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-95
   create entries atomically, do entry view timeout correctly, other things

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-96
   go go gadget asynchronous property filtering!

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-97
   fix sorting order in entry view

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-98
   actually add playing column to view and stuff

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-99
   don't crash when playing an entry and switching to another filter

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-100
   fix exact queries for genre/artist/album, and attempt to impl. searching

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-101
   make searching really work

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-102
   pre-fold sort keys

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-103
   optimize library queries even more

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-104
   tweak querying a bit more, still a bit buggy though

 * walters@rhythmbox.org--2003/rhythmbox--rhythmdb--1.0--patch-105
   merge with mainline