preliminary support for 'cvs ls' subcommand

[Alexey M. <al...@hs...>]

Hello,

I've partially implemented the 'cvs ls' subcommand.  Alex, I hope it
would help you to at least put the basic framework into your code.
You should make the parsing be extensible, because currently only few
fields are shown up.

The usage and output look like this:

alexm@tyranny:~/cvs-ncli/src$ ./cvs -d :pserver:alexm@localhost:/repos ls -R testing
Dtesting/
/README/1.1//
/hello.c/1.1//
Dtesting/sdir/
/sfile/1.1//
Dtesting/sdir/ssdir/


Everything is hopefully obvious, as you see. 

Currently there are only filename and revision number supported.  I
could not get the timestamp (as in CVS/Entries) file however I tried.
It must be hidden somewhere in very obvious place. 


Everything is committed.  I'll keep you informed.

--alexm