cmake: Enable CMP0042 @rpath usage for MacOSX
cmake: CMP0042 is set conditionally, default to 2.8 behaviour
Merge pull request #1170 from rleigh-dundee/macosx-rpath-cmake3

cmake: Enable CMP0042 @rpath usage for MacOSX
Update auto-generated documentation

Repository: openmicroscopy/bioformats
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