This patch is the initial implementation of OpenMP-API specs book section
20.5.5 with title "Thread Handles"

libgomp/ChangeLog

2022-05-06 Ahmed Sayed <ahmedsayedmousse@gmail.com>

* Makefile.am (libgompd_la_SOURCES): Add ompd-threads.c.

* Makefile.in: Regenerate.

* ompd-support.h ( gompd_thread_initial_tls_bias ): New Variable.

* ompd-support.c ( gompd_thread_initial_tls_bias ): New Variable.

( gompd_load ): ( gompd_thread_initial_tls_bias ): Initialized with
&gomp_tls_data - pthread_self ().

* ompd-threads.c: New.