Added original SDK code for Alien Swarm.

common/language.h

@@ -0,0 +1,43 @@
+//====== Copyright <20> 1996-2004, Valve Corporation, All rights reserved. =======
+//
+// Purpose: represent a canonical list of the languages we support, 
+//
+//=============================================================================
+
+#ifndef LANG_H
+#define LANG_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+// if you change this enum also change language.cpp:s_LanguageNames
+enum ELanguage
+{
+	k_Lang_None = -1,
+	k_Lang_English = 0,
+	k_Lang_German,
+	k_Lang_French,
+	k_Lang_Italian,
+	k_Lang_Korean,
+	k_Lang_Spanish,
+	k_Lang_Simplified_Chinese,
+	k_Lang_Traditional_Chinese,
+	k_Lang_Russian,
+	k_Lang_Thai,
+	k_Lang_Japanese,
+	k_Lang_Portuguese,
+	k_Lang_Polish,
+	k_Lang_Danish,
+	k_Lang_Dutch,
+	k_Lang_Finnish,
+	k_Lang_Norwegian,
+	k_Lang_Swedish,
+	k_Lang_MAX
+};
+
+ELanguage PchLanguageToELanguage(const char *pchShortName);
+const char *GetLanguageShortName( ELanguage eLang );
+const char *GetLanguageVGUILocalization( ELanguage eLang );
+const char *GetLanguageName( ELanguage eLang );
+
+#endif /* LANG_H */