[CVS ci] PIR method calls

[Leopold Toetsch]

I have expanded the parser a bit:

  obj.method(args)
  ret = obj.method(...)
  (retvals) = obj.method(...)
C<method> is a label. It's not yet stored in the classes namespace. s. 
imcc/t/syn/objects.t

And plain function calls work now with variables too:

  .local pmc the_sub
  the_sub = global "_sub"
  the_sub(10, 20)
  ...
  .sub _sub
leo