Patch 5.4.7/API changes

== Changes ==
* arg4's value for sender now returns player name - realm name instead of just the player name (e.g. "Arthas-Silvermoon")
* arg2's value for author now returns player name - realm name instead of just the player name (e.g. "Arthas-Silvermoon")
* I haven't checked all other CHAT_MSG_* events but its not unlikely they will also include realm names
== Automated diff ==
=== Global API ===
 Global API (5.4.2.17688 → 5.4.7.17956)
3 new functions
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=== Events ===
 Events (5.4.2.17688 → 5.4.7.17956)
6 new events
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