[patch] libmudflap threads configury

[James E Wilson]

James E Wilson wrote:
> 	* configure.ac (pthread.h): Use AC_CHECK_HEADERS instead of
> 	AC_CHECK_HEADER.
> 	(target_thread_file): New.  Set from sed'ed gcc output.
> 	(posix_threads): New.  Set from target_thread_file.  Use instead of
> 	ac_have_pthread_h.
> 	(pthread_create_version): Move initialization before code using it.
> 	* configure: Regenerate.

I have checked in this patch now.
-- 
Jim Wilson, GNU Tools Support, http://www.specifix.com