Merge "libbinder: service specific error docs" am: 668b7f71 am: 939d6d34

    static Status fromExceptionCode(int32_t exceptionCode,

                                    const char* message);

    // warning: this is still considered an error if it is constructed with a

    // zero value error code. Please use Status::ok() instead and avoid zero

    // error codes

    static Status fromServiceSpecificError(int32_t serviceSpecificErrorCode);

    static Status fromServiceSpecificError(int32_t serviceSpecificErrorCode,

                                           const String8& message);