AC-branch usage suggestion

[Jacek Konieczny]

Hello,

IMHO anybody who wants to work with Ac (compile things for Ac or fix
bugs in Ac) should edit his ~/.builderrc to include line: 

CVSTAG=AC-branch

This way we may avoid many stupid mistakes. It is too easy to forget
passing branch name to builder or cvs.

Of course anyone who wants to do big changes in PLD should not set the
AC-branch as default.

Greets,
        Jacek