Log Message:
Update to 0.9.5.
Honor PKGMANDIR.

Changes in 0.9.5 (Dec 31, 2005)
- Changed default output to silent like bzip2 and added -v switch
  to make verbose
- Added support to autodetect number of CPUs on OSX
- Added support to compile on Borland and other Windows compilers
  using pthreads-win32 open source library
- Added decompression throttling in case too much backlog in filewriter
- Fixed bug from patch in 0.9.4 that limited file block size to 900k
- Fixed bug that caused file output to fail with some large files
- Fixed pthreads race condition that could cause random segfaults
- Fixed pthreads resource issue that prevented pbzip2 from compressing
  a large number of files at once