Log Message:
Updated pbzip to 1.0.2.

Changes since 1.0:

Changes in 1.0.2 (Jul 25, 2007)
- Added support to directly compress files without using threads
  when files are smaller than the specified block size or the
  system only has 1 CPU.  This will speed things up considerably
  if you are compressing many small files.  You can force this
  behaviour by using -p1
- Added support for pbunzip2 symlink to automatically specify
  decompression mode
- Changed pbzip2 exit code behaviour to match bzip2 for all error
  states (ie: trying to compress a file that already has a .bz2
  extension)

Changes in 1.0.1 (Mar 20, 2007)
- Added #ifdef PBZIP_NO_LOADAVG to remove load average code for
  UNIX systems that do not support it such as HP-UX and OSF1