RestKit request timeout fix

Binary updates for [RestKit PR 2](https://github.com/forcedotcom/RestKit/pull/2), [Mobile SDK issue 394](https://github.com/forcedotcom/SalesforceMobileSDK-iOS/issues/394).
Merge pull request #7 from khawkins/restkit_timeout_fix

RestKit request timeout fix
Updating SalesforceCommonUtils
Merge pull request #8 from khawkins/common_utils_update

Updating SalesforceCommonUtils
Merge remote-tracking branch 'origin/master' into unstable
Merge pull request #9 from khawkins/unstable

Dependencies: merging master into unstable