Revert "Report to plugins as 1.4.7 not 1.5"

This reverts commit 631ba6843d8605c01b2f1479d6e85e0ee693d129.

Conflicts:
	src/main/java/net/minecraft/server/MinecraftServer.java
Revert "Snapshot support."

This reverts commit 4ac94f6a7986211e381df95d6be0ce0a47432774.

Conflicts:
	src/main/java/org/bukkit/craftbukkit/Spigot.java