Log Message:
Update to 1.5.5:

Noteworthy changes in version 1.5.5 (2015-06-08) [C24/A13/R4]
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 * Fixed crash in key listings for user ids with a backslash.

 * Fixed regression for GPGSM use with GnuPG < 2.1.

 * Properly set signature summary for revoked OpenPGP keys.

Noteworthy changes in version 1.5.4 (2015-04-13) [C24/A13/R3]
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 * Fixed a possible crash in the debug code.

 * Fixed building for Windows with newer versions of Mingw.

Noteworthy changes in version 1.5.3 (2014-12-11) [C24/A13/R2]
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 * The export key functions do now return an error if used with the
   latest GnuPG version.

Noteworthy changes in version 1.5.2 (2014-11-21) [C24/A13/R1]
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 * gpgme-tool is now installed.

 * Fix external listing for modern keyservers.

 * Minor other fixes.