* tests/core/ltlcross4.test: Ignore space diff in pandas' output.

tests/core/ltlcross4.test

@@ -57,10 +57,11 @@ EOF
 # will exit 77 if panda is not installed
 $PYTHON test.py >out.1
 
-# remove trailing whitespace from pandas' output,
-# and limit to 6 lines, because Pandas 0.13 adds
-# the size of the dataframe afterwards.
-sed 's/[ \t]*$//g;6q' <out.1 > py.out
+# remove trailing whitespace from pandas' output, and limit to 6
+# lines, because Pandas 0.13 adds the size of the dataframe
+# afterwards.  Alse the spacing between columns differs from version
+# to version.
+sed 's/[ \t]*$//g;6q' <out.1 | sed 's/  */ /g' > py.out
 
 cat >expected <<EOF
  states transitions