Implement quickReject() and drawRect().

The OpenGL ES 2.0 renderer can now draw colored rectangles. At least there's
something on screen now.

Change-Id: I80a13ccc1dd56784edf74f2670a364f30700234a
diff --git a/libs/hwui/Matrix.h b/libs/hwui/Matrix.h
index 9bd289f..8fa5e4d 100644
--- a/libs/hwui/Matrix.h
+++ b/libs/hwui/Matrix.h
@@ -30,6 +30,8 @@
 
 class Matrix4 {
 public:
+	float data[16];
+
 	Matrix4() {
 		loadIdentity();
 	}
@@ -92,14 +94,12 @@
 
 private:
     inline float get(int i, int j) const {
-        return mMat[i * 4 + j];
+        return data[i * 4 + j];
     }
 
     inline void set(int i, int j, float v) {
-    	mMat[i * 4 + j] = v;
+    	data[i * 4 + j] = v;
     }
-
-	float mMat[16];
 }; // class Matrix4
 
 ///////////////////////////////////////////////////////////////////////////////