* dcrt0.cc (set_os_type): Record OS name string.

(getprogname): Eliminate obsolete function.
(dll_crt0_1): Move initial strace initialization output to set_myself.
* exceptions.cc (interruptible): Add debugging output.
(interrupt_setup): New function.
(interrupt_now): Use interrupt_setup to set up common interrupt handler stuff.
(interrupt_on_return): Ditto.
(call_handler): Move signal_arrived arm and clear threads to region where
signalled thread is suspended or suffer races.
* pinfo.cc (set_myself): Output interesting information when strace is first
initialized.  Initialize progname here.
* sigproc.cc (sig_dispatch_pending): Modify to ensure that flush signal are
sent synchronously.
* strace.cc (strace_vsprintf): Move code into strace program.
* uname.cc (uname): Use 'osname' global to construct cygwin name + Windows type
+ version.

winsup/cygwin/sigproc.cc

@@ -550,7 +550,7 @@ sig_clear (int sig)
 /* Force the wait_sig thread to wake up and scan the sigtodo array.
  */
 extern "C" int __stdcall
-sig_dispatch_pending (int force)
+sig_dispatch_pending (int justwake)
 {
   if (!hwait_sig)
     return 0;
@@ -559,7 +559,7 @@ sig_dispatch_pending (int force)
 #ifdef DEBUGGING
   sip_printf ("pending_signals %d", was_pending);
 #endif
-  if (!was_pending && !force)
+  if (!was_pending && !justwake)
 #ifdef DEBUGGING
     sip_printf ("no need to wake anything up");
 #else
@@ -568,7 +568,9 @@ sig_dispatch_pending (int force)
   else
     {
       wait_for_me ();
-      if (ReleaseSemaphore (sigcatch_nosync, 1, NULL))
+      if (!justwake)
+	(void) sig_send (myself, __SIGFLUSH);
+      else if (ReleaseSemaphore (sigcatch_nosync, 1, NULL))
 #ifdef DEBUGGING
 	sip_printf ("woke up wait_sig");
 #else
@@ -578,6 +580,7 @@ sig_dispatch_pending (int force)
 	/*sip_printf ("I'm going away now")*/;
       else
 	system_printf ("%E releasing sigcatch_nosync(%p)", sigcatch_nosync);
+ 
     }
   return was_pending;
 }
@@ -958,7 +961,7 @@ getsem (pinfo *p, const char *str, int init, int max)
 
       DWORD winpid = GetCurrentProcessId ();
       h = CreateSemaphore (allow_ntsec ? sec_user (sa_buf) : &sec_none_nih,
-                           init, max, str = shared_name (str, winpid));
+			   init, max, str = shared_name (str, winpid));
       p = myself;
     }
   else