Tweaked some test data files

Fixed some issues that caused xmllint failures, added features
and keywords, fixed some quotes and removed some <strip> sections
that unnecessarily limited test checking.

tests/data/test1203

@@ -1,4 +1,3 @@
-# Gopher IPv6 connectivity test
 <testcase>
 <info>
 <keywords>
@@ -20,6 +19,9 @@ iMenu results		error.host	1
 
 # Client-side
 <client>
+<features>
+ipv6
+</features>
 <server>
 gopher-ipv6
 </server>
@@ -27,7 +29,7 @@ gopher-ipv6
 Gopher IPv6 index
  </name>
  <command>
--g "gopher://%HOSTIP:%GOPHER6PORT/1/moo/1203"
+-g gopher://%HOSTIP:%GOPHER6PORT/1/moo/1203
 </command>
 </client>