* w32fns.c Include unistd.h, to avoid compiler warnings on Cygwin.
(emacs_abort) [CYGWIN]: Don't call _open_osfhandle; instead, use
- file descriptor 2 for standard error.
+ file descriptor 2 for standard error. (Bug#12805)
2012-11-05 Chong Yidong <cyd@gnu.org>