Improve checks for dce/posix threads to also do the right thing, if the

Improve checks for dce/posix threads to also do the right thing, if the

2002-07-02  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* configure.in: Improve checks for dce/posix threads to also do
	the right thing, if the thread functions are not declared in the
	pthread.h. Idea from Miroslaw Dobrzanski-Neumann
	<mne@mosaic-ag.com> in #77981.