Changed the copyright text format in the credits

sfall/Modules/Credits.cpp

@@ -33,8 +33,8 @@ static DWORD CreditsLine = 0;
 static const char* ExtraLines[] = {
 	"#SFALL " VERSION_STRING,
 	"",
-	"sfall is free software, licensed under the GPL",
-	LEGAL_COPYRIGHT,
+	"@sfall is free software, licensed under the GPL",
+	"@" LEGAL_COPYRIGHT,
 	"",
 	"@Author",
 	"Timeslip",

sfall/Modules/Graphics.cpp

@@ -76,7 +76,7 @@ bool Graphics::PlayAviMovie = false;
 bool Graphics::AviMovieWidthFit = false;
 static bool dShowMovies;
 
-bool DeviceLost = false;
+static bool DeviceLost = false;
 static char textureFilter; // 1 - auto, 2 - force
 
 static DDSURFACEDESC surfaceDesc;

sfall/Modules/Graphics.h

@@ -30,7 +30,6 @@ namespace sfall
 extern IDirect3D9* d3d9;
 extern IDirect3DDevice9* d3d9Device;
 extern IDirectDrawSurface* primarySurface;
-extern bool DeviceLost;
 
 /*
 static void DDSurfaceToDXTexture(BYTE* src, long width, long height, long src_width, DWORD* dst, long dst_width) {