* dcrt0.cc (dll_crt0_1): Initialize cygwin threads here only when not forking.

* fork.cc (fork_child): Initialize cygwin thread later in process to avoid
allocating memory for thread stacks.
* shared.cc (open_shared): Issue warning if NT and shared segment is relocated.

winsup/cygwin/shared.cc

@@ -104,6 +104,10 @@ open_shared (const char *name, int n, HANDLE &shared_h, DWORD size, shared_locat
 
   if (!shared)
     {
+#ifdef DEBUGGING
+      if (wincap.is_winnt ())
+	system_printf ("relocating shared object %s(%d) on Windows NT", name, n);
+#endif
       /* Probably win95, so try without specifying the address.  */
       shared = (shared_info *) MapViewOfFileEx (shared_h,
 				       FILE_MAP_READ|FILE_MAP_WRITE,