new dev bundle: with npm/npm#5137

We should be able to remove our "npm install --force" workaround after
this.
We no longer need to pass --force to npm install

(Also, make a test assertion useful: assert.equal's default truncation
is horrible.)
A better version of our patch

However, the better version involves taking some changes from a version
of npm not yet released with Node.
update regexp for new version of npm

also, use quotemeta where necessary
Merge branch 'fix-npm-cache' into devel