Add 'save species band' in sim to exercise bug fix

We need to make sure that the fix in connection to the bug with the
order of the 'save species band' and 'init "honly.ini"' commands is
always exercised.

tsuite/auto/limit_caseb_h_den4_temp4.in

 set save prefix "limit_caseb_h_den4_temp4"
+#
+# Gary tripped over a bug when this command is issued before
+# the 'init "honly.ini"' below.
+# Keep this command up here to always exercise the fix.
+#
+save species bands ".band" "FeII_bands.ini" "Fe+"
 constant temperature 1e4
 hden 4
 set eden 4