Our version of underscore doesn't have 'partial' anymore since we
downgraded.

Missed one instance of this because I missed arrays in the EJSON support in
mongo testing.
Add .gitignore to package directories to match linker branch.

This way switching between linker and devel doesn't leave you with lots of junk
in git status.
Revert the contents of the avital-client-compatibility branch.

We will rebase linker on top of this commit, and then re-apply.
stuff that doesn't have conflicts
resolved conflicts in packages.js.
we merged dependencies and metadataFileHashes as dependencyFileShas
check in geoff's version of bundler.js
export sha1
noMinify -> minify
we don't think we need .call
update bundler.bundle API to use packageSearchOptions and releaseStamp
fix a bug
don't update NPM in warehouse
hashes
bundle NPM modules correctly.
tests mostly pass.
don't lose emily's change to a moved file
refactoring toward Library
continue refactor toward Library
further refactor toward Library
bundler takes a library
continue factoring out Library