Create and use libzmq.dll and libzmq.lib

[rgbkrk]

In order to generate this DLL and .lib, I had to build straight from libzmq directly. This switches us over to Git LFS for DLLs as well. We need this to build all in one, though we're not there yet.

This works when building with node-gyp (note that I'm on Visual Studio 2015):

PS C:\Users\Administrator\zmq-prebuilt> node-gyp build
gyp info it worked if it ends with ok
gyp info using node-gyp@3.3.0
gyp info using node@5.7.0 | win32 | x64
gyp info spawn C:\Program Files (x86)\MSBuild\14.0\bin\msbuild.exe
gyp info spawn args [ 'build/binding.sln',
gyp info spawn args   '/clp:Verbosity=minimal',
gyp info spawn args   '/nologo',
gyp info spawn args   '/p:Configuration=Release;Platform=x64' ]
Building the projects in this solution one at a time. To enable parallel build, please add the "/m" switch.
     Creating library C:\Users\Administrator\zmq-prebuilt\build\Release\zmq.lib and object C:\Users\Administrator\zmq
  rebuilt\build\Release\zmq.exp
  Generating code
  Finished generating code
  zmq.vcxproj -> C:\Users\Administrator\zmq-prebuilt\build\Release\\zmq.node
gyp info ok

Not having a good time with prebuild though:

PS C:\Users\Administrator\zmq-prebuilt> prebuild --all
prebuild info begin Prebuild version 4.1.0
prebuild info build Preparing to prebuild zmq-prebuilt@0.0.3 for v0.10.42 on win32-x64 using node-gyp
prebuild http GET https://nodejs.org/dist/v0.10.42/node-v0.10.42-headers.tar.gz
prebuild http 200 https://nodejs.org/dist/v0.10.42/node-v0.10.42-headers.tar.gz
prebuild WARN install got an error, rolling back install
prebuild ERR! install error
prebuild ERR! stack Error: unexpected end of file
prebuild ERR! stack     at Zlib._handle.onerror (zlib.js:363:17)
prebuild ERR! not ok

[rgbkrk]

Added in the 32-bit builds for appveyor and everyone's sake just now.

[jdfreder]

Thanks @rgbkrk !