[pca] enhancement request

[Jan Holzhueter]

Hi,
since all stuff went to MOS I started to use pca --readme a lot more.
My "problem" is that if you do something like  --readme 144574
(Patch without revision) it will get all other readme files form the
needed patches to get to 144574 ( Default behavior like -l and -d).
For the readme I don't think it should grep all the other readme files.
It should just get the latest revision readme.
Or did I use the --readme wrong? :)

Greetings
Jan