YB.ORM-0.4.7 released

* New SQL dialect supported: MSSQL. Tested on Linux (TDS)
  and Windows (Native Client 10).
* Explicit .select_from<>() and .join<>() modifiers for QueryObj.
* yborm_gen can be used to manually create schema objects
  in database (--populate-schema) as well as to drop them
  (--drop-schema) in a correct order.
* yborm_gen tools can help to extract database schema
  and store it into XML format (--extract-schema),
  there are still limited support for type mapping.
* New layout for SqlDialect descendant classes.
* Proper support for 'LIKE' and 'IN' operators.
* Fix comparison of Property instances.
* Make use of std::tuple if it's available (GCC >= 4.6, MSVC >= 2013).
* CMake: build-system fixes to allow easy selection of Boost instance.
* Windows: move third party components (Boost, CppUnit, LibXML2, SQLite)
  into separate folders, pack up prebuilt third party libraries
  for certain versions of MSVC and MinGW.
* Allow to compile in SQLite3 sources into YB.ORM dll.
* Fix Automake/CMake scripts to support building YB.ORM with Qt5
  on Linux and Windows.
* Auth example: Fix possible endless loop in HTTP code.