Cross Reference: /external/libcxx/test/thread/thread.mutex/thread.once

`Name`	`Date`	`Size`
Up to higher level directory
`Android.mk`	03-Dec-2014	`905`
`nothing_to_do.pass.cpp`	03-Dec-2014	`372`
`thread.once.callonce/`	03-Dec-2014
`thread.once.onceflag/`	03-Dec-2014