Making sure paths used for file system data storage (hdds, floppies) are directories or don't exist by trying to delete them if they're files, instead of just giving up - since apparently these can appear in some obscure scenario that can't be reproduced anymore.
Fixed keyboard behavior some.
I'm not really happy with this fix, because it adds special behavior for multiblock screens where it shouldn't be, but meh.
Merge branch 'OC1.3-MC1.6.4' of github.com:MightyPirates/OpenComputers into OC1.3-MC1.7.2