better treatment of variant relative pronouns in Eng, based on suggestions by DrBean in gf-dev

lib/src/translator/ExtensionsEng.gf

@@ -122,16 +122,6 @@ lin
       s = s.s ! QDir ++ frontComma ++ t.s ++ cl.s ! t.t ! t.a ! CPos ! oDir
     } ;
 
-  that_RP = {
-    s = \\_ => "that" ;
-    a = RNoAg
-    } ;
-
-  who_RP = {
-    s = \\_ => "who" ;
-    a = RNoAg
-    } ;
-
   CompS s = {s = \\_ => "that" ++ s.s} ;
   CompQS qs = {s = \\_ => qs.s ! QIndir} ;
   CompVP ant p vp = {s = \\a => ant.s ++ p.s ++ 

lib/src/translator/TranslateEng.gf

@@ -84,14 +84,7 @@ lin
   PPos = {s = [] ; p = CPos} ;
   PNeg = {s = [] ; p = CNeg True} | {s = [] ; p = CNeg False} ;
 
-  IdRP = ExtensionsEng.that_RP | G.IdRP | ExtensionsEng.who_RP |
-     { s = table {
-        RC _ (NCase Gen) | RC _ NPNomPoss => "whose" ; 
-        RC _ NPAcc    => [] ;
-        _     => "which"
-        } ;
-      a = RNoAg
-      } ;
+  IdRP = E.that_RP | G.IdRP | E.who_RP | E.emptyRP ; --- "that" safest when gender is not known
 
   DetNP d = G.DetNP d | G.DetCN d (UseN (mkN "one")) ; -- I like this / I like this one ; it / the one