Store local environment in frame (not terminal) parameters.

Store local environment in frame (not terminal) parameters.

* src/callproc.c (child_setup, getenv_internal, Fgetenv_internal):
  Store the local environment in a frame (not terminal) parameter.
  Update doc strings.
  (syms_of_callproc): Update doc strings.
  (Qenvironment): Moved to frame.c.

* lisp/env.el (read-envvar-name, setenv, getenv, environment): Use frame
  parameters to store the local environment, not terminal parameters.

* server.el (server-process-filter): Store the local environment in a
  frame (not terminal) parameter.  Do not try to decode environment
  strings.

* lisp/frame.el (make-frame): Set up the 'environment frame parameter,
  when needed.

* src/frame.c (Qenvironment): Move here from callproc.c.
  (Fdelete_frame): Don't allow other frames to refer to a deleted frame
  in their 'environment parameter.
  (Fframe_with_environment): New function.
  (syms_of_frame): Defsubr it.  Initialize and staticpro Qenvironment.

* frame.h (Qenvironment): Declare.
* lisp.h (Fframe_with_environment): EXFUN it.

git-archimport-id: lorentey@elte.hu--2004/emacs--multi-tty--0--patch-467