Standard config update pass
Implemented Redstone Armory

An extension mod for Redstone Arsenal to add advanced tools.
2-DEV-153 XML update

Will be used to cut stable releases as 2.8.7.4.
Will be used to cut experimental releases as 2.9.1.0.

(The 2.9 bump is due to the addition of a new mod for testing.)
2.9.1.0-EXP-MAIN update