* libpty.h: If SOCK_DGRAM is not defined, provide a definition for

    * libpty.h: If SOCK_DGRAM is not defined, provide a definition for
        struct sockaddr_in to satisfy prototype. (based on similar
        code in k5-int.h).

        * update_wtmp.c (ptyint_update_wtmp), update_utmp.c
        (pty_update_utmp), open_slave.c (pty_open_slave), getpty.c
        (pty_getpty): conditionalize definition of variables based on code
        paths that are included.

Essentially, clean up many compiler warnings.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@12438 dc483132-0cff-0310-8789-dd5450dbe970