hotfix2 mark drawRect#stroke as optional

stdlib-sup39/draw-lite.sun

@@ -1,2 +1,2 @@
 builtin drawText(x, y, fontSize, colorTop, colorBot, fmt, ...);
-builtin drawRect(fill, stroke, x0, y0, x1, y1);
+builtin drawRect(fill, x0, y0, x1, y1);

stdlib-sup39/draw.sun

@@ -0,0 +1,22 @@
+builtin drawText(x, y, size, colorTop, colorBot, fmt, ...);
+
+// drawNgon(fill, stroke, n, angle=0)
+builtin drawNgon(fill, stroke, n, ...);
+
+// setMTX(dst)
+// setMTX(dst, src)
+// setMTX(dst, src, dx, dy)
+// setMTX(dst, src, SS, dx, dy)
+// setMTX(dst, src, xx, yy, dx, dy)
+// setMTX(dst, src, xx, xy, yx, yy, dx, dy)
+builtin setMTX(dst, ...);
+var const MTX_LOADIMM = 0;
+var const MTX_NEW = 0;
+
+// drawRect(fill, x0, y0, x1, y1)
+// drawRect(fill, stroke, x0, y0, x1, y1, resetMtx=true)
+builtin drawRect(fill, x0, y0, x1, y1, ...);
+var const FILL_NONE = 0;
+var const STROKE_NONE = 0;
+
+builtin setLineWidth(lw);