Cross Reference: /external/libcxx/test/strings/basic.string/string.modifiers/string_op_plus_equal

`Name`	`Date`	`Size`
Up to higher level directory
`Android.mk`	23-Apr-2015	`1.4K`
`char.pass.cpp`	23-Apr-2015	`1.2K`
`initializer_list.pass.cpp`	23-Apr-2015	`926`
`pointer.pass.cpp`	23-Apr-2015	`2.8K`
`string.pass.cpp`	23-Apr-2015	`2.9K`