Adding missing doc fragments on __* methods for Object and Class
nsf.c:
- define means to protect "undefined" internally-directly called methods
  __alloc and __dealloc in nx. This is achieved mostly via a an
  additional value in a method declaration in ::nsf::objectsystem::create.
  Example:
    -class.dealloc {__dealloc ::nsf::methods::class::dealloc 1}
- extend regression test
Merge branch 'master' of ssh://alice.wu-wien.ac.at/usr/local/src/git-repo/nsf