(the non-springboarding piece of that is now controlled by
METEOR_TEST_NO_SPRINGBOARD)
This means that run-all-tests.sh can use launch-meteor to bootstrap a warehouse
instead of starting with an empty warehouse directory (which is no longer
allowed).
also, fix npm module usage out of the bootstrap tarball: we were too liberal in
the "never update npm dependencies in the warehouse" rule since the bootstrap
tarball would contain packages with no node_modules (or if we had a failure
between downloading a package and running installNpmDependencies). instead,
"never update npm dependencies in the warehouse if .npm/node_modules already
exists".
Blessing is now the time that bootstrap tarballs are created.
There's a banner that goes into the global manifest (stored in
scripts/admin/banner.txt).
The global manifest.json is now entirely generated: there's no record of the
current version stored in git.
Have not yet updated launch-meteor or install-template.sh or the fake release
for this brave new bootstrap world, or https://install-bootstrap.meteor.com/.
