Transform widgets; Scale and Rotate versions

To use; press the (temporal) icon in header. Switching widget types is by
pressing G, R or S once, if current widget type is different it switches,
otherwise it goes to normal Transform().

Widgets need a bit test for picking accuracy, correct drawing etc.
The rotate widget has a center button for 'trackball' rotate. That latter
can also be used for hotkey-based rotate.

In current code, all widgets remain in "Global" space, also in editmode.
Also widget updates while using normal transform has to be done.

2 Bugfixes:
- rotate in PoseMode had error for 2d 'around' center
- transform in postemode could crash, due to typo (& or |)

source/blender/src/drawobject.c

@@ -318,11 +318,14 @@ void drawaxes(float size)
 	}
 }
 
-#if 0
-static void drawgourcube(void)
+
+void drawsolidcube(float size)
 {
 	float n[3];
 
+	glPushMatrix();
+	glScalef(size, size, size);
+	
 	n[0]=0; n[1]=0; n[2]=0;
 	glBegin(GL_QUADS);
 		n[0]= -1.0;
@@ -364,8 +367,9 @@ static void drawgourcube(void)
 		glNormal3fv(n); 
 		glVertex3fv(cube[7]); glVertex3fv(cube[4]); glVertex3fv(cube[0]); glVertex3fv(cube[3]);
 	glEnd();
+	
+	glPopMatrix();
 }
-#endif
 
 static void drawcube(void)
 {