2006-05-03  Michael Natterer  <mitch@gimp.org>

	Made an object out of the plug-in struct. Also change refcounting
	considerably:

	- gimp_plug_in_open() adds a reference that is only dropped by
	  gimp_plug_in_close().
	- temporarily ref the plug-in while handling messages.
	- remporarily ref the plug-in while a recursive main loop is
	  running.
	- each caller of gimp_plug_in_new() also unrefs the plug-in before
	  returning, the only reference that persists across functions
	  (that keeps the plug-in alive) is the one added by open().

	* app/plug-in/plug-in.[ch]
	* app/plug-in/plug-in-context.[ch]
	* app/plug-in/plug-in-message.[ch]
	* app/plug-in/plug-in-progress.[ch]: removed these files...

	* app/plug-in/gimpplugin.[ch]
	* app/plug-in/gimpplugin-context.[ch]
	* app/plug-in/gimpplugin-message.[ch]
	* app/plug-in/gimpplugin-progress.[ch]: ...and added here as GObject.

	* app/plug-in/plug-in-proc-frame.[ch]: removed...

	* app/plug-in/gimppluginprocframe.[ch]: ...and added with a namespace.

	* app/plug-in/Makefile.am
	* app/plug-in/plug-in-types.h
	* app/plug-in/gimppluginmanager-call.c
	* app/plug-in/gimppluginmanager-file.c
	* app/plug-in/gimppluginmanager.[ch]
	* app/pdb/gimppluginprocedure.c
	* app/pdb/gimptemporaryprocedure.c
	* app/pdb/gimptemporaryprocedure.h
	* tools/pdbgen/pdb/context.pdb
	* tools/pdbgen/pdb/drawable.pdb
	* tools/pdbgen/pdb/help.pdb
	* tools/pdbgen/pdb/message.pdb
	* tools/pdbgen/pdb/plug_in.pdb
	* tools/pdbgen/pdb/progress.pdb
	* tools/pdbgen/pdb/undo.pdb: changed accordingly.

	* app/pdb/context_cmds.c
	* app/pdb/drawable_cmds.c
	* app/pdb/help_cmds.c
	* app/pdb/message_cmds.c
	* app/pdb/plug_in_cmds.c
	* app/pdb/progress_cmds.c
	* app/pdb/undo_cmds.c: regenerated.