exists before using it.
(check_mi_and_console_threads): Likewise.
* gdb669.exp (get_mi_thread_list): Likewise.
(check_mi_and_console_threads): Likewise.
Check for pthread.h.
* configure: Regenerate.
* config.in: New file.
* pthreads.c: New file.
* mi-pthreads.exp: New file to test thread functionality.
* gdb669.exp: New file.