Create world-searchable /data/misc/user directory

installd will create a separate subdirectory for each user.

Change-Id: I95ec09169ea70f35443bbb3209237611e174ca29
Merge "Create world-searchable /data/misc/user directory"
Build host with multilib both enabled.

Change-Id: I58fa91bc097dfba573b6db27e389f5ed6556032f
Merge "Build host with multilib both enabled."
auto-merger: merge in from aosp/master