define ROKEN_LIB_FUNCTION on all exported functions

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@14773 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/roken/getnameinfo_verified.c

@@ -46,7 +46,7 @@ RCSID("$Id$");
  * NI_NAMEREQD flag is set or return the numeric address as a string.
  */
 
-int
+int ROKEN_LIB_FUNCTION
 getnameinfo_verified(const struct sockaddr *sa, socklen_t salen,
 		     char *host, size_t hostlen,
 		     char *serv, size_t servlen,