* server.el (server-process-filter): Likewise.

* server.el (server-process-filter): Likewise.
(server-process-filter): Likewise. Also set COLORFGBG and
COLORTERM.

* frame.el (frame-initialize, make-frame): Likewise.

* faces.el (tty-set-up-initial-frame-faces): Likewise.

* env.el (read-envvar-name): Don't consider the environment frame
param.
(setenv): Set display-environment-variable and
term-environment-variable.

* frame.c (Qterm_environment_variable,
Qdisplay_environment_variable): New variables.
(syms_of_frame): Intern and staticpro them.

* frame.h: Declare them here.

* callproc.c (child_setup): Use the display-environment-variable
and term-environment-variable frame params.
(getenv_internal): Likewise.
(set_initial_environment): Initialise Vprocess_environment.

* frames.texi (Basic Parameters): Add display-environment-variable
and term-environment-variable.