* debug.h (being_debugged): New macro.

* dtable.cc (dtable::extend): Use new macro.
* exceptions.cc (try_to_debug): Ditto.
* strace.cc (strace::hello): Only output debugging info when we think we're
being debugged.

winsup/cygwin/strace.cc

@@ -38,6 +38,9 @@ strace::hello()
       return;
     }
 
+  if (!being_debugged ())
+    return;
+
   __small_sprintf (buf, "cYg%8x %x", _STRACE_INTERFACE_ACTIVATE_ADDR, &active);
   OutputDebugString (buf);