Fix writing of tiff description

toCharArray() is the same as getBytes('UTF-16BE')
This leads to have unicode for units not being
correctly encoded.
Add test checking that the reader used is the OME-TIFF reader.
Add doc.
Add bash script for updating copyright headers

This script is largely inspired from a Request from Curtis Rueden and should
be called with a positional argument equal to the current year, e.g.
$ bash tools/update_copyright 2015
Add first version of script to bump Maven version
Add substitution for release.version
Add logic to replace STABLE_VERSION
Refactor pattern substitution into function
Use argparse and functions
Make script executable
Add version format check
Fix description
Merge pull request #1463 from sbesson/version_numbers_tools

Add script to bump version numbers
Split pattern
Add logic to update single year copyrights
Attempt to fix sed issue
Add check for copyright year arguments
Merge pull request #1462 from sbesson/copyright_tools

Add bash script for updating copyright headers
cmake: Replace FindXerces with FindXercesC

Upstream renamed the macro to avoid confusion with the
Java implementation.
cpp: bioformats: Correct placement of warning pragmas in PixelProperties