Add command to make Emacs window fullscreen.

Default keybinding is F11. The command follows freedesktop standards,
so it should work on most desktops, at least in GNU/Linux systems.
Restrict fullscreen feature to X-based systems.

Recent Emacs in OSX already comes with fullscreen support.
Merge pull request #359 from haplo/fullscreen

Add command to make Emacs window fullscreen
Refine fullscreen support
More tips
Remove solarized-theme from the list of default packages
Username fix for windows-nt
Merge pull request #366 from shanmuha/master

Username fix for windows-nt
Adds web-mode and prelude module.
Merge pull request #368 from climatewarrior/add-web-mode

Adds web-mode as prelude module.
Fix issue disabling white-space-mode.
Merge pull request #369 from climatewarrior/add-web-mode

Fix issue disabling white-space-mode.
Fixed username (in windows-nt) in the final message after loading prelude.
Merge pull request #370 from shanmuha/master

Fixed username (in windows-nt) in the final message after loading prelud...
Disable ido's annoying auto-merging of directories if no match is found
Always auto-skip closing pair
open file in new session, new process
Merge pull request #371 from eq42/async-open

open file in new session, new process
Clean up updated prelude-open-with
Make "C-x C-m" a true alias for M-x by binding it to smex.