cmCryptoHash: Increase alignment of HashFile buffer

The SHA512_Update implementation accesses input data via 64-bit
integers.  This requires alignment of the input buffer on some
architectures.  Align our stack-allocated buffer for file content to
satisfy this requirement.
asm support: adapt to changes in CMakeDetectCompiler in 2.8.10

This fixes #14210. In 2.8.10 CMakeDetermineCompiler.cmake was
modified (or added), and now the _INIT variable must not
be set to a list anymore, before it worked.

Alex
cmcurl: Backport curl bug 1192 fix (#14250)

LLVM headers define strlcat as a macro rather than as a function.
See upstream Curl issue:

 http://curl.haxx.se/bug/view.cgi?id=1192

It was addressed by removing use of strlcat altogether.  Port the
upstream fix to CMake's curl.
VS12: Add Visual Studio 12 generator (#14251)

Copy cmGlobalVisualStudio11Generator to cmGlobalVisualStudio12Generator
and update version numbers accordingly.  Add the VS12 enumeration value.
Add module CMakeVS12FindMake to find MSBuild.  Look for MSBuild in its
now-dedicated Windows Registry entry.  Teach the platform module
Windows-MSVC to set MSVC12 and document the variable.  Teach module
InstallRequiredSystemLibraries to look for the VS 12 runtime libraries.

Teach tests CheckCompilerRelatedVariables, Preprocess, VSExternalInclude,
and RunCMake.GeneratorToolset to treat VS 12 as they do VS 10 and 11.

Inspired-by: Minmin Gong <minmin.gong@gmail.com>
VS12: Generate flag tables from MSBuild v120 tool files

Run cmparseMSBuildXML.py on cl.xml, lib.xml, and link.xml to generate
our flag tables:

 python cmparseMSBuildXML.py -x ".../MSBuild/Microsoft.Cpp/v4.0/v120/1033/cl.xml" > cmVS12CLFlagTable.h
 python cmparseMSBuildXML.py -x ".../MSBuild/Microsoft.Cpp/v4.0/v120/1033/lib.xml" > cmVS12LibFlagTable.h
 python cmparseMSBuildXML.py -x ".../MSBuild/Microsoft.Cpp/v4.0/v120/1033/link.xml" > cmVS12LinkFlagTable.h

Fix up the declaration names at the top of each file.  Finally, teach
cmVisualStudio10TargetGenerator to select the version of the table
matching the version of VS.
FindBoost: Add -vc120 mangling for VS 12
SelectLibraryConfigurations: Fix for cached <base>_LIBRARY

The line

  set( ${basename}_LIBRARY )

removes the normal variable, but if the corresponding cached variable is
present then line

  list( APPEND ${basename}_LIBRARY optimized "${_libname}" )

uses that and fails.  Replace the original line with

  set( ${basename}_LIBRARY "" )

to set the normal variable to empty instead of unsetting it.
VS: Clarify Visual Studio product year for each version

Add to the brief documentation of the Visual Studio 10, 11, and 12
generators the corresponding VS product year.  Clarify that VS11 is for
Visual Studio 2012, and VS12 is for Visual Studio 2013.
Merge branch 'SelectLibraryConfigurations-cached-library' into release
Merge branch 'FixAsmSupport' into release
Merge branch 'sha2-alignment' into release
Merge branch 'curl-bug-1192' into release
Merge branch 'vs12-generator' into release
Merge branch 'vs-generator-brief-doc-update' into release
CMake 2.8.11.2