rsync: update to 3.2.1

Disable several options to enable compilation.

Simplified several configure options.

Remove pointless configure var.

Added ssh hinting patch. Some SSH incompatibility.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

net/rsync/patches/010-disable-ssh-46-hint.patch

@@ -0,0 +1,19 @@
+diff --git a/main.c b/main.c
+index b41a394..dd49f87 100644
+--- a/main.c
++++ b/main.c
+@@ -572,14 +572,6 @@ static pid_t do_cmd(char *cmd, char *machine, char *user, char **remote_argv, in
+ 			args[argc++] = "-l";
+ 			args[argc++] = user;
+ 		}
+-#ifdef AF_INET
+-		if (default_af_hint == AF_INET && strcmp(t, "ssh") == 0)
+-			args[argc++] = "-4"; /* we're using ssh so we can add a -4 option */
+-#endif
+-#ifdef AF_INET6
+-		if (default_af_hint == AF_INET6 && strcmp(t, "ssh") == 0)
+-			args[argc++] = "-6"; /* we're using ssh so we can add a -6 option */
+-#endif
+ 		args[argc++] = machine;
+ #endif
+