Ger: improved infinitives (and passives); tests with more verbs in testing/german

- NP: added field isLight in order to push negation behind light nps;
  this had been done in gf-3.9 using field isPron, but isPron is now
  used to put accusative pronoun before dative pronoun. Removed field
  adv: adverbial extensions cannot be extracted (todo: also for CN).
  Reduced isLight*isPron to w:Weight with 3 values: WPron, WLight, WHeavy.

- added param Control and field ctrl:Control to classify V2V-verbs into
  subject- and object-contol verbs, use ctrl to make reflexives agree
  with subject resp. object in VPSlash, and refine ComplSlash.

- Verb: new versions of ComplVV, SlashV2V and SlashVV to give better
  (nested) infinitives (extracting infzu and correcting object order).
  a) nested SlashVV doesn't work properly;
  b) SlashV2VNP may have to be commented out to prevent a stack overflow
     when compiling.
  Intended change of SlashV2VNP in tests/german/TestLangGer could not
  be tested due to size problems with the compiler.

- VP: changed field a1 : Polarity => Str to a1:Str to collect the adverbs
  coming before negation, using (negation : Polarity => Str) in mkClause.
  Use objCtrl:Bool instead of missingAdv to let reflexives agree with object.

- ResGer: insertObjNP reorganized, infzuVP added

- DictVerbsGer: some corrections (helft -> hilft, *sprecht -> *spricht)

- Some potential passive rules in tests/german/TestLangGer|Eng

- ExtraGer needs to be cleaned up with repect to the modified mkClause.

tests/german/TestLang.gf

@@ -1,10 +1,12 @@
 abstract TestLang = 
   Grammar, 
-  Lexicon
-  , TestLexiconGerAbs
-  , Construction
+  TestLexiconGerAbs
+--  , Construction
   ** {    
   flags startcat=Phr ;
+
+  fun
+    SlashV2Vneg : V2V -> VP -> VPSlash ; -- negative use of VP: promise, not to vp
   cat 
     VPSlashSlash ;
   fun
@@ -17,4 +19,17 @@ abstract TestLang =
     Slash4V4 : V4 -> NP -> VPSlashSlash ;
 
     ComplSlashSlash: VPSlashSlash -> NP -> VPSlash ;
+
+    -- Passive
+    PastPartAP  : VPSlash -> AP ;  -- lost (opportunity) ; (opportunity) lost in space
+    PassVPSlash : VPSlash -> VP ;  -- from ExtraGer, to be corrected
+
+    PassV2S : V2S -> S -> VP ;
+    PassV2Q : V2Q -> QS -> VP ;
+    PassV2V : V2V -> VP -> VP ;
+
+    Pass3V3 : V3 -> NP -> VP ;  -- den Beweis erklärt bekommen
+    Pass2V3 : V3 -> NP -> VP ;  -- uns erklärt werden ; Eng give_V3[indir,dir]: we are given the book
+
+    Pass2V4 : V4 -> NP -> VPSlash ; -- bei dir (für Gold) gekauft werden
   } ;