now compiles under Cygwin and eCos again.

git-svn-id: svn://svn.berlios.de/openocd/trunk@1102 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/helper/replacements.h

@@ -83,10 +83,15 @@ struct timeval {
 
 /* gettimeofday() */
 #ifndef HAVE_GETTIMEOFDAY
+
+
+#ifdef _WIN32
 struct timezone {
     int tz_minuteswest;
 	int tz_dsttime;
 };
+#endif
+struct timezone;
 
 extern int gettimeofday(struct timeval *tv, struct timezone *tz);
 #endif