tgba: remove the global_state and global_automaton argument of succ_iter

* iface/dve2/dve2.cc, src/kripke/kripkeexplicit.cc,
src/kripke/kripkeexplicit.hh, src/ta/tgtaexplicit.cc,
src/ta/tgtaexplicit.hh, src/ta/tgtaproduct.cc, src/ta/tgtaproduct.hh,
src/tgba/taatgba.cc, src/tgba/taatgba.hh, src/tgba/tgba.hh,
src/tgba/tgbabddconcrete.cc, src/tgba/tgbabddconcrete.hh,
src/tgba/tgbaexplicit.hh, src/tgba/tgbakvcomplement.cc,
src/tgba/tgbakvcomplement.hh, src/tgba/tgbamask.cc,
src/tgba/tgbamask.hh, src/tgba/tgbaproduct.cc, src/tgba/tgbaproduct.hh,
src/tgba/tgbaproxy.cc, src/tgba/tgbaproxy.hh,
src/tgba/tgbasafracomplement.cc, src/tgba/tgbasafracomplement.hh,
src/tgba/tgbascc.cc, src/tgba/tgbascc.hh, src/tgba/tgbasgba.cc,
src/tgba/tgbasgba.hh, src/tgba/tgbatba.cc, src/tgba/tgbatba.hh,
src/tgba/tgbaunion.cc, src/tgba/tgbaunion.hh, src/tgba/wdbacomp.cc:
Here.
* NEWS: Mention it.

NEWS

@@ -60,6 +60,9 @@ New in spot 1.2.3a (not yet released)
       methods have been removed from the TGBA interface and all
       subclasses.
 
+    - tgba::succ_iter() now takes only one argument.  The optional
+      global_state and global_automaton arguments have been removed.
+
     - The long unused interface for GreatSPN (or rather, interface to
       a non-public, customized version of GreatSPN) has been removed.
       As a consequence, the we could get rid of many cruft in the