Started release-0.34.0
Minor fix in the build system

- Fixed linking problem in the spectra advanced example.
Update in the build system and exe requirements

- Added the detection of C++11 unicode literals to the build system.
- Added unicode literals to example requirements.
Fixup of a bug in config_compiler.hpp
Multiple MSVC related changes

- Removed the MSVC project for an previously removed example.
- Updated oglplus/lib.hpp to exclude some parts when variadic templates
  are not available.
Updated example requirements
Updated example requirements
Update of changelog
Merge branch 'release-0.34.0' into develop