ITK documentation fixes from @iMichka

See scifio/scifio-imageio#11
Merge pull request #1019 from joshmoore/rebased/develop/itk-doc-fixes

ITK documentation fixes from @iMichka (rebased onto develop)
Merge pull request #1010 from rleigh-dundee/cpp-fixes

C++ fixes and test improvements
cpp: ome-compat: Add threading and locking support and tests
cpp: ome-compat: Add MSVC vsnprintf compatibility workaround
cmake: Add libtiff check
travis: cpp build requires libtiff5-dev
cpp: bioformats: Add TIFF reader
cpp: test: Add missing space to formatreader
fix
fix
fixtiff
tifffix
tiffexception
wip
fix
split tiff
fix
fieldsetting
offset