Issue #1 resolved
As finally decided at http://www.volumesoffun.com/phpBB3/viewtopic.php?p=3430#p3430 there is a simple way of generally detecting C++11 features in the compiler.
It should consist of
- A CMake part which detects features based on try_run()
- A config.h-type header files defining which features are available for the C++ code to use.