WIP: Leave placemark comments in code in preparation for engine version springboard
Stamp engine version in ENGINE/.engine_version.txt
Detect when we should springboard
get tarball path correctly
rename get_core_dir -> getEngineDir
maybe springboarding works
remove debugging code
springboarding appears to actually work
missing var
don't use a release manifest in a checkout

[ ... whiteboard task to look into this further ...]
Checkouts don't load releases, take 2
- die if you use --release in a checkout
- don't run calculateReleaseVersion twice for test-packages
- DTRT for test-packages in a checkout
files.get*Current*EngineDir
no more warehouses in checkouts
Pass release into bundler in all cases
extend an XXX comment