bldmefirst without repo - Removed bldmefirst repo from 'foundation' and 'clean', adn changed sources_fcl.csv files to use FCLs for 'deviceplatformrelease' and build bldmefirst from sources.

Removed setting of sf.project.type, as it's the same for all these projects, so can be done in the sf-platform config file.

Added helix packasge (now added to cache).