natSystem.cc (getSystemTimeZone): Use HAVE_UNDERSCORE_TIMEZONE.

natSystem.cc (getSystemTimeZone): Use HAVE_UNDERSCORE_TIMEZONE.

2002-05-03  David Billinghurst  <David.Billinghurst@riotinto.com>
	    Tom Tromey  <tromey@redhat.com>

	* java/lang/natSystem.cc (getSystemTimeZone): Use
	HAVE_UNDERSCORE_TIMEZONE.
	* include/config.h.in: Rebuilt.
	* acconfig.h (HAVE_UNDERSCORE_TIMEZONE, HAVE_BACKTRACE): Undef.
	* aclocal.m4, configure: Rebuilt.
	* acinclude.m4: Run AC_EXEEXT.
	* configure.in: Adjust test for `timezone' so it fails on Cygwin.
	Add test for `_timezone'.

Co-Authored-By: Tom Tromey <tromey@redhat.com>
From-SVN: r53117