* [CONSIDER MERGING] Clarification and typo fixed in DRC doc.
* Implemented #1097 (discourage file compression, use CBLOCK)
* A warning is printed if file compression is enabled on OASIS
* A hint is present in the writer options
* CBLOCK is default (with fresh config) and for buddy tools
(use --cblock=false to disable it)
* Strict mode is default too.
* Updated tests
Unlike Linux, RTTI does not work in MacOS/clang when the classes
originate from different compile units. I think that Linux's C++
runtime not only checks for identical vtable, but alternatively
for same name. On MacOS, dynamic_cast will fail instead. This fix
solves this issue by placing the important steam format option
specializations into a single specific shared object (the DB plugin).