Rename 'Standard Gaming Platform' to 'sgp' (#246)

* rename 'Standard Gaming Platform' to 'sgp'

* Adapt CMakeLists.txt files to renamed SGP directory

* Lowercase it

sgp/Ja2 Libs.h

@@ -0,0 +1,61 @@
+#ifndef _JA2_LIBS_H_
+#define _JA2_LIBS_H_
+
+
+	//enums used for accessing the libraries
+	enum
+	{
+		LIBRARY_DATA,
+		LIBRARY_EDITOR,
+		LIBRARY_AMBIENT,
+		LIBRARY_ANIMS,
+		LIBRARY_BATTLESNDS,
+		LIBRARY_BIGITEMS,
+		LIBRARY_BINARY_DATA,
+		LIBRARY_CURSORS,
+		LIBRARY_FACES,
+		LIBRARY_FONTS,
+		LIBRARY_INTERFACE,
+		LIBRARY_LAPTOP,
+		LIBRARY_MAPS,
+		LIBRARY_MERCEDT,
+		LIBRARY_MUSIC,
+		LIBRARY_NPC_SPEECH,
+		LIBRARY_NPC_DATA,
+		LIBRARY_RADAR_MAPS,
+		LIBRARY_SOUNDS,
+		LIBRARY_SPEECH,
+//		LIBRARY_TILE_CACHE,
+		LIBRARY_TILESETS,
+		LIBRARY_LOADSCREENS,
+		LIBRARY_INTRO,
+
+#ifdef GERMAN
+		LIBRARY_GERMAN_DATA,
+#endif
+
+#ifdef DUTCH
+		LIBRARY_DUTCH_DATA,
+#endif
+
+#ifdef POLISH
+		LIBRARY_POLISH_DATA,
+#endif
+
+#ifdef ITALIAN
+		LIBRARY_ITALIAN_DATA,
+#endif
+
+#ifdef RUSSIAN
+		LIBRARY_RUSSIAN_DATA,
+#endif
+
+#ifdef FRENCH
+		LIBRARY_FRENCH_DATA,
+#endif
+
+		NUMBER_OF_LIBRARIES
+	};
+
+
+#endif