* fhandler.h (fhandler_console): Remove tcsetpgrp.

* fhandler_console.cc (fhandler_console::tcsetpgrp): Eliminate.
* fork.cc (fork_parent): Avoid returning same pid twice in a row regardless of
OS.
* pinfo.cc (pinfo::init): Rename create argument to flags and treat it as such.
* signal.cc (set_sigcatchers): New function.
(signal): Use set_sigcatchers to increment or decrement sigcatcher tracker.
(sigaction): Ditto.  Add debugging output.
* spawn.cc (spawn_guts): Always quote first argv[0] argument when it's a
COMSPEC shell.

winsup/cygwin/fhandler_termios.cc

@@ -293,9 +293,6 @@ fhandler_termios::line_edit (const char *rptr, int nread, int always_accept)
   if (!iscanon || always_accept)
     set_input_done (ralen > 0);
 
-  /* FIXME:  It's not clear that this code will ever do anything.
-     Currently, it doesn't look like accept_input will ever return
-     a negative number. */
   if (input_done)
     (void) accept_input ();