Fix NetWare missing curl_off_t typedef!!

lib/Makefile.netware

@@ -605,5 +605,6 @@ else
 	@echo $(DL)#define CURL_FORMAT_OFF_T "%ld"$(DL) >> $@
 	@echo $(DL)#define CURL_SIZEOF_CURL_OFF_T 4$(DL) >> $@
 endif
+	@echo $(DL)typedef CURL_OFF_T curl_off_t;$(DL) >> $@
 	@echo $(DL)#endif /* __CURL_CURLBUILD_H */$(DL) >> $@