Log Message:
Update riak to 1.1.2

This is mainly a stabalization release, adding a few stability improvements
for heavily loaded networks and improving support for running mixed clusters
while migrating to the 1.1.x series.

Bug fixes:

* erlang_js inlines do not work on XCode 4.3
* Work-around for net_kernel:get_status() race condition
* Handoff reported as started even if rejected for exceeding handoff
  concurrency
* Intermittent hang with handoff sender
* handoff of fallback data can be delayed or never performed
* Chicken & egg problem with vnode proxy process start & registration?
* Put FSM crashes if forwarded node goes down