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/examples.txt

@@ -331,3 +331,29 @@ ich bin nicht auf ihn neugierig            -- reject
 
 -- done
 
+-- Passive of VPSlash and V3
+
+sie gibt uns den Wagen                     -- accept
+
+der Wagen wird uns gegeben                 -- accept, via PassVPSlash or Pass2V3
+uns wird der Wagen gegeben                 -- accept, word order variant (not recognized)
+wir bekommen den Wagen gegeben             -- accept, via Pass3V3
+
+sie schickte uns den Wagen                 -- accept (Eng with prep)
+
+der Wagen wurde uns geschickt              -- accept, via PassVPSlash
+uns wurde der Wagen geschickt              -- accept, word order variant (not recognized)
+wir bekamen den Wagen geschickt            -- accept, via Pass3V3
+
+der Wagen würde uns geschickt werden       -- accept
+der Wagen würde uns nicht geschickt werden -- accept
+wir würden den Wagen geschickt bekommen    -- accept
+wir würden den Wagen nicht geschickt bekommen -- accept
+wir würden nicht den Wagen geschickt bekommen -- accept ?
+
+der Wagen sei uns geschickt worden         -- accept
+wir hätten den Wagen geschickt bekommen    -- accept
+
+wir wollen den Wagen geschickt bekommen    -- accept
+wir würden den Wagen geschickt bekommen wollen haben   -- accept
+