Updated version to 1.6.4-R1.0 in pom.xml for RB.
Updated version to 1.6.4-R1.1-SNAPSHOT for development towards next release.
Updated version to 1.6.4-R2.0 in pom.xml for RB.
Updated version to 1.6.4-R2.1-SNAPSHOT for development towards next release.
Update Update Bukkit to 1.7.2