Add some snw tiles used in Brest and the south pole to the retro image set.

ChangeLog.rtro

@@ -1,3 +1,12 @@
+2020-09-30 Daniel Hawkins
+	* ground/Winter/drifts.rtro.111.png,
+	  ground/Winter/ice.rtro.111.png,
+	  ground/Winter/istone.rtro.111.png,
+	  ground/Winter/snow.rtro.111.png,
+	  ground/Winter/snow4.rtro.111.png,
+	  ground/Winter/snow5.rtro.111.png: Add some snow and ice tiles used near Brest and at the south pole.
+
+
 2020-09-29 Daniel Hawkins
 	* wall/longtable/longtable_3.rtro.111.png: Make this face match the rest.
 	* indoor/table_*x*.rtro.111.png: Fix scaling of multitile tables.

TODO.rtro

@@ -1,17 +1,12 @@
 Images missing faces in the retro tileset:
 ./ground/Winter/drifts2.111
-./ground/Winter/snow4.111
 ./ground/Winter/snow.111
 ./ground/Winter/snowroad2.111
 ./ground/Winter/snow3.111
-./ground/Winter/drifts.111
 ./ground/Winter/snow2.111
-./ground/Winter/snow5.111
-./ground/Winter/ice.111
 ./ground/Winter/glacier.111
 ./ground/Winter/snowroad.111
 ./ground/Winter/ice2.111
-./ground/Winter/istone.111
 ./ground/Weather/mountain_foilage.111
 ./ground/Weather/mountain2_snow.111
 ./ground/Weather/mountain2_rivlets.111