Added initial implementation of low-level DNS packetization 
and parsing functions in PJLIB-UTIL/dns.h. Errors codes
added for DNS formatting related errors.



git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@745 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjlib/include/pj/errno.h b/pjlib/include/pj/errno.h
index 5744a75..03440c2 100644
--- a/pjlib/include/pj/errno.h
+++ b/pjlib/include/pj/errno.h
@@ -287,9 +287,15 @@
 #define PJ_ETOOBIG	    (PJ_ERRNO_START_STATUS + 17)/* 70017 */
 /**
  * @hideinitializer
- * Error in gethostbyname()
+ * Error in gethostbyname(). This is a generic error returned when
+ * gethostbyname() has returned an error.
  */
 #define PJ_ERESOLVE	    (PJ_ERRNO_START_STATUS + 18)/* 70018 */
+/**
+ * @hideinitializer
+ * Size is too small.
+ */
+#define PJ_ETOOSMALL	    (PJ_ERRNO_START_STATUS + 19)/* 70019 */
 
 
 /** @} */   /* pj_errnum */