This option allow to call multiple rpccall with changing argument each time

We now can use alias of alias (limited to 10 iterations).

Commands loading is now done by crawling commands directory under cccli module.
All command which starts by Commmand_ and which is a son of Command class are candidate.

Introduce new class RemoteCommand, which help checking needed remote functions are available
before adding a command to list of commands

fix args check for command clear and history

Starting support of title color in tagdisplay system

server must send tags with string format