Update maven compiler to 2.3.2

This change removes a redundant addition of source encoding and makes our
compiler match the current maven default. This amends the commit
52215c617166dddbe52cf7ee8d37964dc948f753

Upstream issue http://jira.codehaus.org/browse/MCOMPILER-70
Fix format of 9cba5ff2b8b3b80068f464fc4cecc3e97b7cf4f1
Display command-message closing bracket correctly. Fixes BUKKIT-4894

This commit adds proper formatting to the closing bracket used when certain
commands send messages to all players with the broadcast-channel
permission.
Fixed spelling error in getLabel javadoc

"lable" corrected to "label"
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.
Merge #48

Thanks @JamesHealey94

commit 2062dd30c8a47000d008b8d0fa22de2a2f62dca7
Author: James Healey
Date:   2013-10-20 16:16:45 +0100

Fixed spelling error in getLabel javadoc

"lable" corrected to "label"
Pulling Bukkit into Bukkit-Javadoc