Introduce new RPC messaging semantics (bug 910493 part 1, r=cjones).
Add RPC message support to messagemanager (bug 910493 part 2, r=smaug).
Bug 920184 - Have mach xpcshell-test and mochitest-* update test files automatically; r=ted
Bug 922685 - Local $(foreach) variable isn't set properly; r=bsmedberg