* libnautilus/nautilus-directory.h:
	(nautilus_file_get):
	(nautilus_file_detach):
	(nautilus_directory_finalize):
	(nautilus_file_unref):
	Added interface to get a NautilusFile for a specific file rather than
	a file from a directory that we are scanning.

	* libnautilus/nautilus-glib-extensions.c:
	(check_tm_to_g_date):
	A little cleanup of the self-check code.

	* libnautilus/Makefile.am:
	libnautilus/libnautilus.h:
	libnautilus/nautilus-alloc.h:
	libnautilus/nautilus-directory.h:
	Moved g_alloca into its own header file so you don't have to include
	all the Bonobo stuff just to use g_alloca.