Forgot to cvs add this with Mumit's previous patch.

From-SVN: r26359

libf2c/libU77/aclocal.m4

+dnl See whether we have struct timezone
+dnl LIBU77_HAVE_STRUCT_TIMEZONE
+AC_DEFUN(LIBU77_HAVE_STRUCT_TIMEZONE,
+[AC_MSG_CHECKING([whether struct timezone exists])
+AC_CACHE_VAL(libu77_cv_have_struct_timezone,
+[AC_TRY_COMPILE([#include <sys/time.h>],
+[struct timezone tz;],
+libu77_ac_have_struct_timezone=yes, libu77_ac_have_struct_timezone=no)])
+if test $libu77_ac_have_struct_timezone = yes; then
+  AC_MSG_RESULT(yes)
+  AC_DEFINE_UNQUOTED(HAVE_STRUCT_TIMEZONE)
+else
+  AC_MSG_RESULT(no)
+fi
+])dnl
+