fedora18 changes
Some tweaks...
Fixes to bashrc and gt
Some minor tweaks
Random wallpaper script and gnome wallpapers config generator
Merge remote-tracking branch 'origin/arch' into fedora18

Conflicts:
	bash/bash_prompt.sh
	bin/gt
	rc/Xdefaults
	rc/Xmodmap
	rc/bashrc
	rc/gitconfig
	rc/irbrc
	rc/xinitrc
change gitconfig push mode to matching
Merge commit 'ea9ebc52c255fd6ff69f8600d08d1e5f883702f7' into ubuntu

Conflicts:
	rc/bashrc
	rc/gitconfig