1) Add EpocEngineHelper#hasFeatureVariantKeyword(...)
2) Make sure retrieval of makefile directory and makefile name hadles default ARMV5 case
where config is a variant but the FEATUREVARIANT keyword is not specified.
bin.includes = feature.xml,\
Carbide_Image.png,\
license.txt,\
feature.properties
generate.feature@com.nokia.carbide.cpp.source=com.nokia.carbide.cpp