Log Message:
Updated libgpg-error to 1.27.

Noteworthy changes in version 1.27 (2017-02-28) [C22/A22/R0]
-----------------------------------------------

 * Added a Base64 decoder.

 * Added support for the sh3 architecture.

 * Added header gpgrt.h as an alias for gpg-error.h.

 * Fixed macro GPGRT_GCC_VERSION.

 * Fixed a race in non-blocking I/O on Windows.

 * Interface changes relative to the 1.26 release:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 gpgrt_b64state_t                 NEW type.
 gpgrt_b64dec_start               NEW.
 gpgrt_b64dec_proc                NEW.
 gpgrt_b64dec_finish              NEW.
 GPG_ERR_WRONG_NAME               NEW.
 gpgrt.h                          NEW header.