Initial project commit

Code changes
- Major code redesign.
- Spaces to tabs.
- Added precompiled header.
- Changed old style header guard to #pragma once.
- Added Property sheet to increase project portability.
- Added Half-Life startup argument to specify what server dll to load
(example: -cf_svdll opfor.dll).
- Removed console window.
- Removed client hooks.
- Removed autojump.