Until now every thread pool always had at least one tread waiting to avoid

Until now every thread pool always had at least one tread waiting to avoid

2001-04-17  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* gthreadpool.c (g_thread_pool_thread_proxy): Until now every
	thread pool always had at least one tread waiting to avoid
	switching overhead in case a new task would be added soon after
	one finished. This however means a big waste of threads, if many
	mostly inactive thread pools are involved. Now such a waiting
	thread will only wait for half a second (This value is of course
	very randomly picked) and go to the global threadpool afterwards.

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