add newline to bitmap rotation script output

tools/lua/find_rotated_bitmaps.lua

 function string.startsWith(String,Start)
    return string.sub(String,1,string.len(Start))==Start
 end
 
 function string.endsWith(String,End)
    return End=='' or string.sub(String,-string.len(End))==End
 end
 
 function tostr(t)
     local str = ""
@@ skipping 48 matching lines @@
         num_identity_bitmaps = num_identity_bitmaps + 1
       end
     end
 end
 
 function sk_scrape_summarize()
   io.write( "identity = ", num_identity_bitmaps,
             ", translated = ", num_translated_bitmaps, 
             ", scaled = ", num_scaled_bitmaps,
             ", affine = ", num_affine_bitmaps,
-            ", perspective = ", num_perspective_bitmaps)
+            ", perspective = ", num_perspective_bitmaps,
+            "\n")
 end