* dll_init.cc (dll_dllcrt0): Don't try to initialize dll data if we're

dynamically loaded since fork() doesn't work in that scenario anyway.
(dll_dllcrt0_1): Don't accommodate dynamically loaded dlls.
* exceptions.cc (ctrl_c_handler): Don't lock the process; there's too much risk
of deadlock.
* sigproc.cc (_cygtls::remove_wq): Don't try to remove anything from the waitq
if there is obviously nothing there.
* strace.cc (strace::activate): Allow stracing dynamically loaded cygwin1.dll.

winsup/cygwin/sigproc.cc

@@ -346,7 +346,7 @@ out1:
 void
 _cygtls::remove_wq (DWORD wait)
 {
-  if (exit_state < ES_FINAL && sync_proc_subproc
+  if (exit_state < ES_FINAL && waitq_head.next && sync_proc_subproc
       && sync_proc_subproc.acquire (wait))
     {
       for (waitq *w = &waitq_head; w->next != NULL; w = w->next)