[CMake] cmake -E tar using bzip2 compression

[Hugh Sorby]

Hi,

I am using CMake 2.6 and I would like to be able to decompress bz2 
files.  Is it possible to add bz2 compression to the tar command (or 
even better is it already there?).  I was hoping to do something like 
cmake -E tar xjf my_really_cool_source_files.tar.bz2

I have looked but didn't find it, which certainly doesn't rule out the 
fact that it is already there.

Cheers.