Cleanup of 'unused' images, second step.

Genuinely unused ones go to the attic. Where they come from and the
reason they're unused (when that's known) is documented in the attic
README. On this round I discovered that the Dwarvish Explorer
animation sprites that looked unused should have been wired into the
Explorer unit and never were.

attic/README

@@ -1,2 +1,18 @@
 This directory contains old art and resources not currently used anywhere in
 the game.  It should not ship with the distribution tarball.
+Some notes on specific images and image groups follow:
+
+scepter_of_fire.png:
+   Old story image of the Scepter, quite large.
+
+units/thain.png,units/thain2.png: 
+   Originally from SoF.  1.3-sized.
+
+desert-elvish-druid-statue.png, desert-elvish-shyde-statue:
+   Used in older fersions of UtBS. 1.3-sized.
+
+keratur.png:
+   The original image for the uncloaked assassin in UtBS.  1.3-sized.
+
+spider-lich.png:
+   Old unit image from UtBS.

data/campaigns/Under_the_Burning_Suns/units/Dwarvish_Explorer.cfg

@@ -46,6 +46,7 @@
     [/attack]
     [attack_anim]
         [attack_filter]
+            range=ranged
             name=axe
         [/attack_filter]
         {MISSILE_FRAME_HATCHET}
@@ -54,7 +55,7 @@
             [frame]
                 begin=-250
                 end=-100
-                image=units/dwarves/pathfinder-ranged1.png
+                image=units/dwarves/explorer-ranged1.png
                 sound=hatchet.wav
             [/frame]
         [/if]
@@ -63,51 +64,52 @@
             [frame]
                 begin=-250
                 end=-100
-                image=units/dwarves/pathfinder-ranged1.png
+                image=units/dwarves/explorer-ranged1.png
                 sound=hatchet-miss.wav
             [/frame]
         [/else]
         [frame]
             begin=-100
             end=0
-            image=units/dwarves/pathfinder-ranged2.png
+            image=units/dwarves/explorer-ranged2.png
         [/frame]
         [frame]
             begin=0
             end=100
-            image=units/dwarves/pathfinder-ranged3.png
+            image=units/dwarves/explorer-ranged3.png
         [/frame]
         [frame]
             begin=100
             end=200
-            image=units/dwarves/pathfinder-ranged4.png
+            image=units/dwarves/explorer-ranged4.png
         [/frame]
     [/attack_anim]
     [attack_anim]
         [attack_filter]
+            range=melee
             name=battle axe
         [/attack_filter]
         [frame]
             begin=-200
             end=-100
-            image=units/dwarves/pathfinder-attack1.png
+            image=units/dwarves/explorer-attack1.png
         [/frame]
         [frame]
             begin=-100
             end=0
-            image=units/dwarves/pathfinder-attack2.png
+            image=units/dwarves/explorer-attack2.png
         [/frame]
         [frame]
             begin=0
             end=50
-            image=units/dwarves/pathfinder-attack3.png
+            image=units/dwarves/explorer-attack3.png
         [/frame]
         [if]
             hits=yes
             [frame]
                 begin=50
                 end=100
-                image=units/dwarves/pathfinder-attack3.png
+                image=units/dwarves/explorer-attack3.png
                 sound=axe.ogg
             [/frame]
         [/if]
@@ -116,15 +118,14 @@
             [frame]
                 begin=50
                 end=100
-                image=units/dwarves/pathfinder-attack3.png
+                image=units/dwarves/explorer-attack3.png
                 sound={SOUND_LIST:MISS}
             [/frame]
         [/else]
-        # FIXME: This animation frame is missing
-        #[frame]
-        #	begin=100
-        #	end=200
-        #	image=units/dwarves/pathfinder-attack4.png
-        #[/frame]
+        [frame]
+        	begin=100
+        	end=200
+        	image=units/dwarves/explorer-attack4.png
+        [/frame]
     [/attack_anim]
 [/unit]