was previously replaced with a NUL for parsing purposes.  This seems to
fix a very weird parsing bug involving two variable references in the same
value.

with a read lock

Submitted by: Leandro Santi <lesanti@fiuba7504.com.ar>

PR: 1196

ULONG_PTR, so we replace it with equally wide SIZE_T.

fatal exceptions.

PR: 1196
Submitted by: Russel Ruby

keylength, this time larger improvement for shorter keys, and reaches
15%. Both SSE2 and IALU code pathes are improved.

PR: 1198

Submitted by: Marc Bevand and Charles Liu

PR: 1198

Submitted by: Old Wolf, Jon Bright

PR: 1176 [and others]

PR: 1195

PR: 1195

and serial versions of AKID.

PR: 1201

Submitted by: Jonathon Green

PR: 1194

initial testing.