use assembly name from the build process for the GraphicsEnvironment

classpath/gnu/classpath/VMSystemProperties.java

@@ -394,7 +394,7 @@ public class VMSystemProperties
 	p.setProperty("sun.os.patch.level", "");
 	p.setProperty("java.vm.info", "compiled mode");
 	p.setProperty("sun.nio.MaxDirectMemorySize", "-1");
-	p.setProperty("java.awt.graphicsenv", "ikvm.awt.NetGraphicsEnvironment, IKVM.AWT.WinForms");
+	p.setProperty("java.awt.graphicsenv", Configuration.default_graphics_enviroment );
 	// TODO
 	// sun.cpu.isalist:=pentium_pro+mmx pentium_pro pentium+mmx pentium i486 i386 i86
 	// sun.desktop:=windows

openjdk/Configuration.java.in

@@ -29,4 +29,6 @@ package gnu.classpath;
 public interface Configuration
 {
     String default_awt_peer_toolkit = "ikvm.awt.NetToolkit, @AWTASSEMBLY@";
+    
+    String default_graphics_enviroment = "ikvm.awt.NetGraphicsEnvironment, @AWTASSEMBLY@";
 }