Don't overwrite existing "package-archives" value

Instead, we add the archives we want without blowing away any others.
Added a recipe for osx-pseudo-daemon.
Merge pull request #1456 from cdkamat/master

Added a recipe for osx-pseudo-daemon.
Make json recipe builtin starting from Emacs 23
Add recipe for irony-mode
Merge pull request #1460 from Sarcasm/patch-2

Add recipe for irony-mode
Merge pull request #1459 from Sarcasm/patch-1

Make json recipe builtin starting from Emacs 23
Merge pull request #1446 from ustcscgy/fix-elnode

fix building elnode: adjust dependency
Merge pull request #1436 from Willyfrog/info-fix

Adds a sed line that allows to build slime.info with makeinfo v. 5.X
Merge pull request #1416 from rycee/master

Fixed installation of tomorrow-theme.
added export from org-mode to mediawiki
Merge pull request #1461 from gizmomogwai/master

added export from org-mode to mediawiki
irony-mode recipe, add comments and build Release executable

As noted in #1460 it is highly unusual to have both `:build` and `:compile` specified. Add an explanation.
Add nodejs-repl.el.

This mode is an alternative mode to js-comint, while provides more
friendly completions in comint buffer.
Merge pull request #1463 from xiaohanyu/add-nodejs-repl

Add nodejs-repl.el.
Merge pull request #1462 from Sarcasm/patch-1

irony-mode recipe, add comments and build Release executable
Point `workgroups` recipe to new repository

`tlh/workgroups` has been dead for a while now.
Merge pull request #1464 from vedang/fix-workgroups-rcp

Point `workgroups` recipe to new repository
Add :depends to ac-slime.rcp
Merge pull request #1466 from xiaohanyu/fix-ac-slime-depends

Add :depends to ac-slime.rcp