rename logwtmp -> ftpd_logwtmp not to conflict with libc.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@4291 ec53bebd-3082-4978-b11e-865c3cabbd6b

appl/ftp/ftpd/logwtmp.c

@@ -74,7 +74,7 @@ RCSID("$Id$");
 #endif
 
 void
-logwtmp(char *line, char *name, char *host)
+ftpd_logwtmp(char *line, char *name, char *host)
 {
     static int init = 0;
     static int fd;