* child_info.h (CURR_CHILD_INFO_MAGIC): Update.

(child_info::parent_wr_proc_pipe): Eliminate.
* pinfo.h (_pinfo::alert_parent): Move here from pinfo class.
(_pinfo::dup_proc_pipe): New method.
(_pinfo::sync_proc_pipe): Ditto.
* exceptions.cc (sig_handle_tty_stop): Reflect move of alert_parent.
* init.cc (dll_entry): Exit with status one if main process called ExitProcess.
* pinfo.cc (set_myself): Remove handling of parent_wr_proc_pipe.
(_pinfo::exit): Reflect move of alert_parent.  Set procinfo to NULL to flag
that we are exiting normally.  Always use exitcode when exiting
(although this could be a little racy).
(pinfo::init): Set default exit to SIGTERM.  This will be the exit code
reported if process is terminated.
(_pinfo::dup_proc_pipe): New function.
(pinfo::wait): Duplicate wr_proc_pipe to the right place.  Use dup_proc_pipe to
move the pipe to the child.
(_pinfo::sync_proc_pipe): New function.
(_pinfo::alert_parent): Move to _pinfo.  Make sure that wr_proc_pipe is ours
before using it.
* sigproc.cc (child_info::child_info): Remove handling of parent_wr_proc_pipe.
* spawn.cc (spawn_guts): Pass our wr_proc_pipe to the child when execing.
Ensure that exit code of cygwin process started from windows is correctly set.

winsup/cygwin/init.cc

@@ -13,6 +13,7 @@ details. */
 #include "thread.h"
 #include "perprocess.h"
 #include "cygtls.h"
+#include "pinfo.h"
 
 int NO_COPY dynamically_loaded;
 static char *search_for = (char *) cygthread::stub;
@@ -126,6 +127,8 @@ dll_entry (HANDLE h, DWORD reason, void *static_load)
       dll_crt0_0 ();
       break;
     case DLL_PROCESS_DETACH:
+      if (myself)
+	myself->exitcode = 1 << 8;
       break;
     case DLL_THREAD_ATTACH:
       munge_threadfunc ();