Move MSI to a separate solution, so that builing RedisServer.sln
doesn't require having the Wix Toolset installed.

issue 182: provide docx file content as github markdown for easier reading for those without a .docx file viewer.

Restoring the ability to compile without IOCP. To do so remove the WIN32_IOCP definition in the C/C++\Preporcessor\Preprocessor Definitions in all projects. Performance is 30-40% better with IOCP.

Added a project to take current redis version number in src\version.h and propagate this number into the release documentation and the name of the release zip file. This replaces the powershell script used previously to build the binary release package zip.