* Makefile.am, gentest.py: enhanced for enabling build in
  a different directory.  Added (optional) param to gentest.py
  to specify the source directory (bug #155468)
* doc/Makefile.am: changed destination of NEWS from (top_srcdir)
  to (top_builddir) (bug #155468)
* python/Makefile.am, python/generator.py: enhanced for enabling
  build in a different directory(bug #155468).  Added (optional)
  param to generator.py to specify the source directory.  Added
  a new table of functions which have possible "foreign" encodings
  (e.g. UTF16), and code to use python 't' format instead of
  'z' format (mostly solving bug #152286, but still need to
  populate the table).