v0.9.1

This is primarily a bug fix release for v0.9, but we also promote dbz2 to be a released tool.

New features:

• libmfu: added functions for parallel compression / decompression of dbz2 files
• dbz2: compress and decompress a large file in parallel. Thanks to Ahana Roy Choudhury for contributing the original dbz2 implementation using libcircle for parallel compression and decompression and for proposing the original dbz2 file format that facilitates parallel decompression.
• dwalk: --file_histogram option prints a default size histogram
• dwalk: --text option is now documented. Use this option with --output to create a text file.
• per common user request, tools now verbose by default, use new --quiet option to silence
• simplified informational messages to be more concise
• many tools have had their usage and output text updated

Bug fixes:

• cmake: rpaths now supported in both build and install directories
• cmake: tests added to enable Lustre APIs
• cmake: add path to find FindGPFS.cmake when using -DENABLE_GPFS=ON
• libmfu: fixed bug in cache file format that was introduced in v0.9
• dbcast: fixed to no longer create target directory if it already exists
• dfind: output file was mistakenly hardcoded to write to text format
• dwalk: --distribution option led to a hang when using incorrect syntax