Add support for Emacs 24.4

[syl20bnr]

Issue to track progress toward a fill support of Emacs 24.4.

• OS X: Homebrew build with flag --with-x:
  • minibuffer takes more space (more vertical lines)
  • subword displays a lighter
  • mode-line colors from solarized are not accurate in the inactive buffers
  • deletion of orphan package seems broken

[trishume]

You check off the mode line colours one.

Also I'm not sure what you mean by the minibuffer taking more space (assuming "place" is a typo), it looks fine to me.

[syl20bnr]

oops place is the french word sorry.

I tried the homebrew version quickly the release day of 24.4, and it had a minibuffer with more than one line. I'll check again this week end.

[trishume]

I think that might be due to me using https://github.com/railwaycat/emacs-mac-port it might well be broken on the homebrew version.

[syl20bnr]

For the minibuffer height, the issue is indeed here in Emacs version with X support, but resizing the window readjust the minibuffer to the correct minimal height.
If dotspacemacs-fullscreen-at-startup is set to t in ~./spacemacs then the resizing happens automatically.

[syl20bnr]

Spacemacs is now ready for 24.4

orphan package automatic deletion fixed with ef1e3ef
subword lighter with f8638bc