Tag version 2.2.6
Minor fix in the help message
Fix issue with invalid Frame Increment Pointer attribute.

Sometime this attribute refers to an attribute which does not exists.
GDCM was trying to load the pointed to attribute even when non-existing.

Thanks to Weber, Christian (ch.weber@dkfz-heidelberg.de) for bug report and
Brehler, Michael (m.brehler@dkfz-heidelberg.de) for dataset to reproduce issue.
Merge branch 'release-2-2' into release

Conflicts:
	CMakeLists.txt
Merge branch 'release'
Fix double parsing of JPEG-LS header. This closes BUG: 306

Thanks to Aaron Boxer for report on ML.
Merge branch 'release'