[SUBMIT] Chgrp Task, Chown Task

["Patrick (Gus) Heck" <pa...@olin.edu>]

I have written two new tasks, chgrp and chown. They work exactly like 
the existing chmod task. In fact the way I wrote them was to split 
Chmod.java into AbstractAccessTask.java  and a new Chmod.java which 
subclasses this. Then it was extremly easy to tweak the new chmod task 
into the two new tasks. The documentation I provide is basically the 
chmod docs with the appropriate search/replaces too.

I have done this (and my symlink task previously submitted) because I 
want to (insofar as possible) be able to store the contents of a 
directory in CVS, delete the directory and then recreate an (almost) 
exact copy of the directory by calling an ant target that checks stuff 
out of cvs, recreates the links, and resets all the perms/ownerships

With these tasks this is now possible on unix platforms at least, with 
the exception that the symlinks will get converted to canonical forms, 
but this is as best I can tell an insurmountable limitation of java.

I hope you like these tasks and will want to include them.

Gus

(P.S. I'm not sure I like the name AbstractAccessTask even though I 
picked it. Feel free to think of a better one.)