Add automatic generation of editor language settings for C and C++,
so the automatic code correction uses the correct compiler and
compiler flags, including for example the correct C/C++ standard
so construct from such standards are correctly managed by the IDE.
Correct compiler and flags are automatically generated using the
build environment data gathered during configure phase.
The playground example has been modified to contain some code that
is standard specific to demonstrate the new feature when run under
Eclipse.
