bzip2 on 64bit updated

[rodney]

The bzip2 package has been updated on Interix 6.0 64-bit.
This package is now 64-bit for the bzip2 and friends binaries
plus the (static) library.

To sync from the 32-bit to 64-bit do:

 pkg_delete -M bzip2; pkg_update -L bzip2 

This will speed things up a little bit when decompressing.