* sigproc.cc (_pinfo::set_ctty): Move function

* pinfo.cc (_pinfo::set_ctty): to here.
* fhandler_mem.cc (fhandler_dev_mem::fstat): Don't fill out structure if this
is an on-disk device rather than an "auto" device.
* fhandler_raw.cc (fhandler_dev_raw::fstat): Ditto.
* path.cc (normalize_posix_path): Don't treat a standalone '//' as introducing
a UNC path.
(normalize_win32_path): Ditto.

winsup/cygwin/sigproc.cc

@@ -195,14 +195,6 @@ pid_exists (pid_t pid)
   return pinfo (pid)->exists ();
 }
 
-/* Test to determine if a process really exists and is processing signals.
- */
-bool __stdcall
-_pinfo::exists ()
-{
-  return this && !(process_state & PID_EXITED);
-}
-
 /* Return true if this is one of our children, false otherwise.  */
 static inline bool __stdcall
 mychild (int pid)