* expose RDLog to SWIG wrappers
* - added a SetTee() overload that takes a filename as parameter to simplify redirecting from wrappers that do not have interface with C++ streams (e.g., Java and C#)
- replaced some duplicate code with ClearTee() calls
- replaced RDLogger std::shared_ptr with boost::shared_ptr to make it more easily available from SWIG wrappers
- exposed the RDLogger methods to SWIG wrappers
- added Java test for RDLogger
* this should fix the segfault
* avoid issues on case-insensitive platforms
* here's a solution keeping std:;shared_ptr
* change in response to review
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Co-authored-by: Tosco, Paolo <paolo.tosco@novartis.com>
