* exceptions.cc (stack_info::walk): Use method to find offset.

(handle_exceptions): Be more assertive in finding ebp for use under W2K.
Create a dummy stack frame for cases where program is dying and a stack dump is
being output.
(sig_handle): Fill out a GetThreadContext for use with a user-generated "core
dump".

winsup/cygwin/dcrt0.cc

@@ -637,9 +637,6 @@ dll_crt0_1 ()
 
   (void) SetErrorMode (SEM_FAILCRITICALERRORS);
 
-  /* Initialize the heap. */
-  heap_init ();
-
   /* Initialize events. */
   events_init ();
 
@@ -673,6 +670,9 @@ dll_crt0_1 ()
       longjmp (ciresrv->jmp, ciresrv->cygpid);
     }
 
+  /* Initialize the heap. */
+  heap_init ();
+
   /* Initialize our process table entry. Don't use the parent info for
      dynamically loaded case. */
   pinfo_init ((dynamically_loaded) ? NULL : info);