Counter Strike Source: Meta Mod 1.7 Mod

* Added Dark Messiah support. SDK headers are available in our Mercurial forest, as "hl2sdk-darkm". Note that this game uses the new MM:S API, not the legacy API.
* Fixed a bug where plugin aliases defined in VDF files were not working on the Orange Box and Left 4 Dead engines.
* Fixed SourceHook passing invalid mprotect() values (bug 3642).
* Fixed "late" load parameter always being true in VSP mode (bug 3532).
* Added MSVC project templates for plugins, from Daedilus.