Add __android_log_config_read_close() and
__android_log_config_write_close(). Fortify the list macros
to detect for list corruption, looking for entries pointing
to themselves, deleted entries in list.
Test: gTest liblog-unit-tests
Bug: 27405083
Change-Id: I33e8a0cae7e202f1989ddd7c2a96752b44c8e746
Create config_logger, logger and logger_read to house the log
interfaces. Add fake_logger, logd_logger and pmsg_logger to
house the write and read transports. Allows for an easier and
direct path to add new transports to the library.
SideEffects: None, logger benchmark performance unaffected
Bug: 27176738
Bug: 27405083
Change-Id: I01b38637334a5242905c8c89f6ab0a92e2540008
