Build square external pins instead of "flattened" ones.

* Change: In Cumulus/plugins.block.Block, for standalone block,
    the external Pin where created non-square, the "perpandicular"
    side made a half wire width. But in case the wire width was an
    odd number of physical grid, it was leading to offgrid screaming
    in the GDS driver.
      Now, just make them square...

cumulus/src/plugins/alpha/block/block.py

@@ -193,7 +193,7 @@ class Side ( object ):
                                 , pinPos.getX()
                                 , pinPos.getY()
                                 , gauge.getWireWidth()
-                                , gauge.getWireWidth() // 2
+                                , gauge.getWireWidth() # // 2
                                 )
                 NetExternalComponents.setExternal( pin )
                 self.append( pin )