We disposed of the pairs' values. Just remove the reference and let the
garbage collector collect the rest. By calling clear, we are just
wasting our time "removing" the items that the garbage collector would
have to do anyways. Essentially this call just takes up time without
reason.
Also fixes a bug with texture pack loading in the client.
Note: we cannot distribute Mojang assets, but some players might want to
use them. To that end, the launcher now has a button that allows the
user to download them him or herself. Since we download them directly
from Mojang, we're be good to go.
