Added ICarbideBuildConfigutation#getCompileTimeMacros() and EpocEngineHelper#getGlobalDefinesForConfiguration()
as convenience wrappers for getting macros contributing to a carbide project. Removed ICarbideBuildConfiguration#hasSTDCPPSupport().
Refactored CarbideLanguageData to use simplified macro retrieval
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<toc label="Symbian Developer Library" >
<anchor id="anchorSymbianDevLib" /> <!-- Symbian Developer Library -->
<anchor id="anchorCarbideExample" /> <!-- Examples -->
<anchor id="anchorLegal" /> <!-- License info, copyright, trademarks, disclaimers, notices -->
</toc>