cpp: test: Fix fileinfo clang++ compile failure
merge develop -D org: PR 857 (Initial support for Zeiss .lms files)
merge develop -D org: PR 858 (Initial support for Veeco AFM data)
merge develop -D org: PR 859 (Assorted metadata/tile parsing fixes)
merge develop -D org: PR 950 (Cellomics: a few fixes for single-file datasets)
merge develop -D org: PR 959 (CZI: make sure that SubBlocks are correctly initialized in openBytes (rebased onto develop))
merge develop -D org: PR 962 (C++: Add FormatReader interface and associated classes)
merge develop -D org: PR 964 (Log the expected and actual values in failed metadata tests (rebased onto develop))