bug#12574: 24.2.50; r110342: bootstrap failure on Cygwin

[Katsumi Yamaoka]

bootstrap fails on Cygwin for this error:

gcc [...] -o temacs [...]
profiler.o: In function `handle_profiler_signal':
src/profiler.c:246: undefined reference to `_timer_getoverrun'
collect2: ld returned 1 exit status
Makefile:623: recipe for target `temacs.exe' failed
make[2]: *** [temacs.exe] Error 1

Turning HAVE_TIMER_SETTIME off in config.h works around it.

In GNU Emacs 24.2.50.1 (i686-pc-cygwin, X toolkit, Xaw3d scroll bars)
 of 2012-10-03 on localhost
Bzr revision: 110353 fabian@anue.biz-20121003215309-9l3wgr41bjg6h0xx
Windowing system distributor `The Cygwin/X Project', version 11.0.11204000
Configured using:
 `configure '--with-x-toolkit=lucid' '--without-imagemagick'
 '--without-dbus' '--without-gconf' '--without-gsettings''

TIA.