2004-06-11 Sowmini Varadhan <sowmini.varadhan@sun.com>

        * filter.c: (access_list_remark_cmd) buffer_putstr doesnt need cast
          to u_char. (ipv6_access_list_remark_cmd) ditto.
          if.c: ditto
        * network.c: (readn/writen) pointer arg should be type u_char.
        * plist.c: needs to include stream.h, not declare stream functions
          internally.
          (various) Add static qualifier to internal functions.
          (prefix_list_type_str) extraneous breaks in switch statement.
          (ip_prefix_list_description_cmd) buffer_putstr doesnt need cast
        * stream.h: depends on plist.h and export stream_put_prefix
        * vty.c: (vty_<telnet option build functions>) should use
          unsigned char, telnet options are 0 -> 255.
        * zclient.c: various u_char<->char type cleanups.
        * zebra.h: Having to define CMSG_* can apply to more than just
          BSDI_NRL.
        * ripd.c: (rip_distribute_update_all) distribute list hook
          function pointer prototype requires struct prefix_list * arg.
          (rip_distribute_update_all_wrapper) update to pass required arg,
          NULL.
diff --git a/lib/network.c b/lib/network.c
index b68761b..d105db4 100644
--- a/lib/network.c
+++ b/lib/network.c
@@ -24,7 +24,7 @@
 
 /* Read nbytes from fd and store into ptr. */
 int
-readn (int fd, char *ptr, int nbytes)
+readn (int fd, u_char *ptr, int nbytes)
 {
   int nleft;
   int nread;
@@ -50,7 +50,7 @@
 
 /* Write nbytes from ptr to fd. */
 int
-writen(int fd, char *ptr, int nbytes)
+writen(int fd, u_char *ptr, int nbytes)
 {
   int nleft;
   int nwritten;