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/getcwd.c

@@ -45,7 +45,7 @@ RCSID("$Id$");
 
 #include "roken.h"
 
-char*
+char* ROKEN_LIB_FUNCTION
 getcwd(char *path, size_t size)
 {
     char xxx[MaxPathLen];