chunk progress prints fewer lines. Made a perhaps insignificant

algorithm change

gmap.py

@@ -40,7 +40,9 @@ def main():
     if options.procs > 1:
         for i, (col, row, filename) in enumerate(chunks):
             results[col, row].wait()
-            print "{0}/{1} chunks rendered".format(i, len(chunks))
+            if i > 0:
+                if 1000 % i == 0 or i % 1000 == 0:
+                    print "{0}/{1} chunks rendered".format(i, len(chunks))
     
     print "Writing out html file"
     if not os.path.exists(destdir):