Java Edition Alpha server 0.2.6

0.2.6 is a server update to Java Edition Alpha released on November 30, 2010, which was mandatory to update due to protocol changes.

Changes

 * Added proper hurt animations and sounds to mobs and players.
 * Fixed dead players logging in as invisible ghosts.
 * Server logging now appends to server.log rather than overwriting it.
 * The join server screen now remembers the last entered IP.
 * Increased chunk saving frequency on the server.
 * Leaving sneak mode no longer triggers many sounds.
 * Sneaking players are now visible.
 * Names of sneaking players are not visible through walls, and are visible a much shorter distance.