gtk: Rename C4AppX to C4AppGTK

CMakeLists.txt

@@ -617,12 +617,12 @@ if(USE_GTK)
 		src/res/resource.h
 		src/res/Static.h
 	)
+
 	list(APPEND OC_SYSTEM_SOURCES
 		src/editor/C4ConsoleGTK.cpp
-		src/platform/C4AppX.cpp
-		src/platform/C4AppXImpl.h
+		src/platform/C4AppGTK.cpp
+		src/platform/C4AppGTKImpl.h
 		src/platform/C4WindowGTK.cpp
-		src/platform/C4WindowX.cpp
 	)
 elseif(USE_SDL_MAINLOOP)
 	list(APPEND OC_SYSTEM_SOURCES

Makefile.am

@@ -561,10 +561,9 @@ else
 if GTK
 clonk_SOURCES += \
 src/editor/C4ConsoleGTK.cpp \
-src/platform/C4AppX.cpp \
-src/platform/C4AppXImpl.h \
-src/platform/C4WindowGTK.cpp \
-src/platform/C4WindowX.cpp
+src/platform/C4AppGTK.cpp \
+src/platform/C4AppGTKImpl.h \
+src/platform/C4WindowGTK.cpp
 else
 if WIN32
 clonk_SOURCES += \

src/platform/C4AppGTK.cpp

@@ -43,7 +43,7 @@
 
 #include "c4x.xpm"
 
-#include "C4AppXImpl.h"
+#include "C4AppGTKImpl.h"
 
 C4AbstractApp::C4AbstractApp(): Active(false), fQuitMsgReceived(false),
 		// main thread

src/platform/C4WindowGTK.cpp

@@ -51,7 +51,7 @@
 #include <GL/glx.h>
 #endif
 
-#include "C4AppXImpl.h"
+#include "C4AppGTKImpl.h"
 
 // Some helper functions for choosing a proper visual