Add "GNU-like" project files to repository

Create the "standard" files that should accompany a GNU-like project
release: 'AUTHORS', 'ChangeLog', 'COPYING', 'INSTALL', 'NEWS', 'README',
and 'THANKS'.

These files are created by Automake and help to organise history,
contributions, and structure. This makes them important for deadlines,
and marking authenticity of work.
Upgrade the Quake source to Visual Studio 2010

Completely remove all Visual Studio 6 files and replace them with build
data for Visual Studio 2010.

The build files for system for Windows relies on software that no longer
works for current editions of the operating system.

No other files are generated other than those that mimic the original
settings.