Add an ES6Compiler which renames .es6.js to .js.

Review Request #7955 — Created Feb. 10, 2016 and submitted — Latest diff uploaded

Information

Djblets
release-0.10.x
bad917a...

Reviewers

Pipeline's built-in ES6Compiler forces one to use the annoying .es6
extension, which breaks a lot of other built-in tooling. This compiler uses the
somewhat more sane .es6.js.

Used this with Review Board.