Insert missing floor tiles, update cave wall

git-svn-id: svn://svn.code.sf.net/p/crossfire/code/maps/trunk@10187 282e977c-c81d-0410-88c4-b93c2d0d6712

santo_dominion/magara/south_lighthouse/floor_4

@@ -4427,7 +4427,7 @@ arch small_stones
 x 41
 y 18
 end
-arch blocked
+arch cave23
 x 41
 y 18
 end
@@ -5661,6 +5661,9 @@ arch cave2
 x 54
 y 18
 end
+arch small_stones
+x 55
+end
 arch cave4
 x 55
 end
@@ -5736,10 +5739,17 @@ arch small_stones
 x 55
 y 17
 end
+arch small_stones
+x 55
+y 18
+end
 arch cave2
 x 55
 y 18
 end
+arch small_stones
+x 56
+end
 arch cave4
 x 56
 end
@@ -5815,6 +5825,10 @@ arch small_stones
 x 56
 y 17
 end
+arch small_stones
+x 56
+y 18
+end
 arch cave2
 x 56
 y 18