Work-around browserify bug

Browserify >= 7.0.1 has a bug: it never calls transforms that are passed
as strings. So… we’ll work around that by just requiring the transforms.
At least this fixes our build.

browserify issue submitted: https://github.com/substack/node-browserify/issues/1032
fix global transforms #oops

browserify v5 swapped the arg order and this slipped through.