Changes to editors/emacs and Mk/bsd.emacs.mk were taken from
PR/137956 by Ashish SHUKLA (thanks!). 
Those ports which define EMACS_PORT_NAME to be "emacs21" were
not touched (this time). They may be converted to the new
world order by removing the above mentioned assignment.
Four ports were marked as BROKEN with EMACS_PORT_NAME=emacs23
(they do not compile):
Three ports were marked as IGNORE with EMACS_PORT_NAME=emacs23:
. japanese/egg-canna (the port version is dated as of 2001,
does not compile with Emacs 23 and seems it cannot be fixed);
. deskutils/remember.el (was incorporated into Emacs 23);
. editors/nxml (was incorporated into Emacs 23).
Changes that were made after (and as a result of) exp run. For
EMACS_PORT_NAME?= was changed to EMACS_PORT_NAME= to the apropriate
emacs port name.
PR: ports/137956 , ports/141369 
Submitted by: Ashish SHUKLA <wahjava at gmail.com> ,
bsam (me) 
Exp-run by: miwi