cpp: compat: Add regex cmatch and smatch
cpp: tiff: Wrap PlanarConfiguration tag

Provide native PlanarConfiguration enumeration.
cpp: tiff: Add PlaneRegion type and intersection
cpp: tiff: IFD uses PlaneRegion
cpp: tiff: Add TileInfo tile metadata and tests
travis: Install graphicsmagick
cpp: tiff: Update documentation comments
cpp: tiff: IFD visitors pass PlaneRegion by const reference
cpp: test: Correct tiff find_tile_tests indentation
cpp: test: Register tiff strip testcases
Merge pull request #1352 from rleigh-dundee/cpp-tiff-pixeldata2

C++ TIFF tiling support