Update to 1.12:

Noteworthy changes in version 1.12 (2013-06-24)
-----------------------------------------------

* Add support for 64 bit Windows (use ./autogen.sh --build-w64).

* Fixed parsing and installing of the Windows .def file.

* Interface changes relative to the 1.11 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GPG_ERR_NO_CRYPT_CTX        NEW.
GPG_ERR_WRONG_CRYPT_CTX      NEW.
GPG_ERR_BAD_CRYPT_CTX        NEW.
GPG_ERR_CRYPT_CTX_CONFLICT  NEW.
GPG_ERR_BROKEN_PUBKEY        NEW.
GPG_ERR_BROKEN_SECKEY        NEW.

(wiz)