Add new plugin emacs, to take benefit of daemon capabilities of emacs >=23

plugins/emacs/emacs.plugin.zsh

+# Use daemon capabilities of emacs 23
+if "$ZSH/tools/require_tool.sh" emacs 23 2>/dev/null ; then
+    export EDITOR="$ZSH/plugins/emacs/emacsclient.sh"
+    alias emacs="$EDITOR --no-wait"
+    alias e=emacs
+
+    alias emasc=emacs
+    alias emcas=emacs
+    # create a new X frame
+    alias emacs_frame='emacsclient --alternate-editor "" --create-frame'
+fi

plugins/emacs/emacsclient.sh

+#!/bin/sh
+
+# Starts emacs daemon if not already started.
+
+x=`emacsclient --alternate-editor '' --eval '(x-display-list)' 2>/dev/null`
+if [ -z "$x" ] ;then
+    emacsclient --alternate-editor "" --create-frame $@
+else
+    emacsclient --alternate-editor "" $@
+fi