.osx: Use `-array` instead of `-array ""`

Ref. #350.
.osx: Remove “increase window resize speed”

Sadly, this doesn’t work anymore in OS X 10.10.
Fixed alnum function
Merge commit '4471e2732faede1d9b242cb547de8005578b3d10'

* commit '4471e2732faede1d9b242cb547de8005578b3d10':
  .osx: Remove “increase window resize speed”
  .osx: Use `-array` instead of `-array ""`