[Bleeding] Fix stack overflow with Ender Crystals. Fixes BUKKIT-5583
Avoid using the user cache in skull meta.

To handle changes in 1.7.9 we changed skull meta to use GameProfile
instances instead of strings of player names. This reflects what vanilla is
actually storing for skulls now. As skulls still require a name our API was
not changed and we instead look up the rest of the profile information from
the name. The way this was implemented made it so that deserializing a skull
or setting its name potentially involved a network request. As skull meta
itself does not actually require a complete profile we now simply create one
that only contains a name and leave populating it to the server when it is
actually needed.
Only set skull profile if it is a player skull. Fixes BUKKIT-5605
Handle inventory max stack sizes even better. Fixes BUKKIT-5595

In 7e37cf96 we modified the container logic to handle custom max stack
sizes better and ensure the client stays in sync with this scenario. This
had the effect of sending an extra set slot packet for every inventory
click a player did which was not wanted. These extra packets also cause the
client to recalculate recipes which breaks the result slot for custom
recipes. To avoid the extra packets in general we now only send them if the
max stack is not the one we started with. In the case of a setting a custom
max stack size on a workbench this is still not enough so we also now send
another extra packet to make sure the result slot is always correct.
Handle chat packets correctly
Implement awake flag for bats. Adds BUKKIT-5606
Update CraftBukkit to use new YamlConfiguration encoding changes
Ensure we always log commands and log the right thing.

Waiting to log until after PlayerCommandPreprocessEvent makes the server
not log anything if the event is cancelled. It also makes the server log
what a plugin changed the command to instead of what the player actually
tried to run. As the point of the log is to have a record of every command
a player attempts to run these are both not desirable.
Updated version to 1.7.9-R0.1 in pom.xml for Beta.
Updated version to 1.7.9-R0.2-SNAPSHOT for development towards next release.
Fix polarity of Bat.isAwake() and Bat.setAwake(boolean). Fixes BUKKIT-5624