Fixed a bug with blocks
Fixing fields update, unit test updates
Update reset session cookie logic.

Updated the reset session cookie logic to add the new cookie specifically to the instance host, rather than the blanket .salesforce.com URL.  Fixes some oustanding issues with the broad setting of the sid cookie, as well as not setting on the right domain for Trialforce orgs.
Bumping patch version
Latest unstable shared pointer
Merge pull request #510 from khawkins/unstable

Mobile SDK: Merging master into unstable