* dcrt0.cc (__api_fatal): Simplify to just use strace mechamisms.

(do_exit): Move minimal_printf...
* pinfo.cc (pinfo::exit): ...into here.
* strace.cc (strace::vprntf): Guarantee output to the console when
system_printf/api_fatal.
* heap.cc (heap_init): Wait a second before issuing an error when
ERROR_INVALID_ADDRESS since this is probably due to a CTRL-C handler sneaking
in, using the memory that we want to use for the heap, and, eventually exiting.

winsup/cygwin/pinfo.cc

@@ -139,6 +139,7 @@ pinfo::zap_cwd ()
 void
 pinfo::exit (DWORD n)
 {
+  minimal_printf ("winpid %d, exit %d", GetCurrentProcessId (), n);
   lock_process until_exit ();
   cygthread::terminate ();