Use the atomic integer operations for GMainContext and GMainLoop reference

Use the atomic integer operations for GMainContext and GMainLoop reference

2004-03-04  Sebastian Wilhelmi  <seppi@seppi.de>

	* glib/gmain.c: Use the atomic integer operations for GMainContext
	and GMainLoop reference counting.

	* glib/gmain.c: Hold the main_context_list lock, when iterating
	the list. Only call g_main_context_wakeup for positive reference
	count.