Revert "init: (setq load-prefer-newer t)"

This reverts commit cdcab6464649834dc7aa65606a24712d36ea5998.

For some reason this was resulting in a bunch of "Recursive load"
warnings from jka-compr:

Loading /home/mitchelh/.emacs.d/init.el (source)...
insert-file-contents: Recursive load: "/local/mnt/workspace/mitchelh/opt/emacs-24.4/share/emacs/24.4/lisp/jka-compr.el.gz", "/local/mnt/workspace/mitchelh/opt/emacs-24.4/share/emacs/24.4/lisp/jka-compr.el.gz", "/local/mnt/workspace/mitchelh/opt/emacs-24.4/share/emacs/24.4/lisp/jka-compr.el.gz", "/local/mnt/workspace/mitchelh/opt/emacs-24.4/share/emacs/24.4/lisp/jka-compr.el.gz", "/local/mnt/workspace/mitchelh/opt/emacs-24.4/share/emacs/24.4/lisp/jka-compr.el.gz", "/local/mnt/workspace/mitchelh/opt/emacs-24.4/share/emacs/24.4/lisp/emacs-lisp/warnings.el.gz"

These were originating from everything from warnings.el to isearch.el and org.

`load-prefer-newer' itself is almost certainly not the problem here.
Reverting this commit is most likely just masking the real problem,
but.... OH WELL.
ace-jump-mode: lowercase only
init: handle ANSI escape chars in build output