Fix for CVE-2015-7511

Mainly AESNI fix for Windows

Side-channel fixes

1.6 maintenance release

Maintenance release for the 1.5 series

This is Libgcrypt 1.6.1

Are you ready for Libgcrypt 1.6.0?

Libgcrypt 1.5.3

Release 1.5.1

The Libgcrypt 1.5.1 release.

Release tag for 1.5.0

Nuked almost all trailing white space so that we are able to use
nuke-trailing-whitespace in Emacsens file-write-hooks.

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