Fixed printf format warnings for non-errors. This change is null unless

a system header defines a macro __printf0like() using the new printf0
format attribute.  uucp's internal ulog() function isn't actually
printf-like but uucp normally declares it as such.

gnu/libexec/uucp/common_sources/uudefs.h

@@ -287,7 +287,11 @@ extern boolean fparse_cmd P((char *zcmd, struct scmd *qcmd));
 #if ANSI_C && HAVE_VFPRINTF
 extern void ulog P((enum tlog ttype, const char *zfmt, ...))
 #if GNUC_VERSION > 1
+#ifdef __printf0like
+     __printf0like (2, 3)
+#else
      __attribute__ ((format (printf, 2, 3)))
+#endif
 #endif
      ;
 #else