* DevNotes: Add entry cgf-000017.

* _cygtls.cc (_cygtls::call2): Use new exit_thread function in place of
ExitThread.
* miscfuncs.cc (thread_wrapper): Ditto.
* thread.cc (pthread::exit): Ditto.
(pthread_mutex::unlock): Set tid to NULL rather than 0.
(pthread_spinlock::unlock): Ditto.
* pinfo.cc (commune_process): Actually call lock_process constructor.
* sigproc.cc (exit_thread): New function.
(wait_sig): Handle __SIGTHREADEXIT case.  Don't just block rather than
returning from this function.
* sigproc.h (__SIGTHREADEXIT): New enum.
(exit_thread): Declare.
* sync.cc (muto::release): Accept a tls command-line argument.
* sync.h (muto::release): Accept a tls command-line parameter.  Default to
&_my_tls.

winsup/cygwin/miscfuncs.cc

@@ -27,6 +27,7 @@ details. */
 #include "dtable.h"
 #include "cygheap.h"
 #include "pinfo.h"
+#include "sigproc.h"
 #include "exception.h"
 
 long tls_ix = -1;
@@ -546,7 +547,7 @@ thread_wrapper (VOID *arg)
 	   : : [WRAPPER_ARG] "r" (&wrapper_arg),
 	       [CYGTLS] "i" (CYGTLS_PADSIZE));
   /* Never return from here. */
-  ExitThread (0);
+  exit_thread (0);
 }
 
 HANDLE WINAPI