Adds line to speed up git completion in zsh

From
http://stackoverflow.com/questions/9810327/git-tab-autocompletion-is-useless-can-i-turn-it-off-or-optimize-it/9810485#9810485
Cleans up mac os x path a bit
Latex now has numbers

This is since using hard mode is hard
Merge branch 'speeding-up-zsh'