A libdocument/ev-init.[ch]: Add single init/shutdown method. Bug #569117.

A libdocument/ev-init.[ch]: Add single init/shutdown method. Bug #569117.

	* evince-document.h:
	* libdocument/Makefile.am:
	A libdocument/ev-init.[ch]: Add single init/shutdown method. Bug
	#569117.

	* libdocument/ev-backends-manager.c: (_ev_backends_manager_init):
	* libdocument/ev-backends-manager.h:
	* libdocument/ev-debug.c: (_ev_debug_init), (_ev_debug_shutdown):
	* libdocument/ev-debug.h:
	* libdocument/ev-file-helpers.c: (_ev_file_helpers_init),
	(_ev_file_helpers_shutdown):
	* libdocument/ev-file-helpers.h: Make these init/shutdown methods
	private.

	* properties/ev-properties-main.c: (nautilus_module_initialize),
	(nautilus_module_shutdown):
	* shell/main.c: (main):
	* thumbnailer/evince-thumbnailer.c: (main): Use the new single
	init/shutdown method.

svn path=/trunk/; revision=3391