More HGC Linking Incrementals

[lgray]

checkpointing work up to now.

[cmsbuild]

A new Pull Request was created by @lgray (Lindsey Gray) for CMSSW_6_2_X_SLHC.

More HGC Linking Incrementals

It involves the following packages:

Fireworks/Calo
Fireworks/Geometry
RecoParticleFlow/PFClusterProducer

@nclopezo, @cmsbuild, @alja, @Dr15Jones, @StoyanStoynev, @slava77, @ktf can you please review it and eventually sign? Thanks.
@alja, @mmarionncern, @bachtis this is something you requested to watch as well.
You can sign-off by replying to this message having '+1' in the first line of your reply.
You can reject by replying to this message having '-1' in the first line of your reply.
@fratnikov, @mark-grimes you are the release manager for this.
You can merge this pull request by typing 'merge' in the first line of your comment.

[mark-grimes]

merge