Fix exclusion of favicon.ico and robots.txt on Windows.

The use of path.sep is incorrect because req.url is a URL, not a file
path, and so always contains forward slashes.

I verified that the original code does not work on Windows and that
the new code does.
update bootstrap to 2.2.2
Fix for allowing piping of password to deploy

When piping password from bash $echo MYPASSWD | meteor deploy MYSITE stdin.setRawMode() is not available. Check availability before calling.
Update packages/accounts-facebook/facebook_server.js - add expiresAt
Reorg facebook_server.js
minor rename
Wrap some CLI functions in a Fiber
Fix #203: support less @import directives
Fix standalone tests for the 'stream' package
Exit `meteor run --once` on bundler crash
Update Node to 0.8.18.

We now used TypedArrays (Uint8Arrays), and versions of Node prior to 0.8.17 have
a security vulnerability related to TypedArrays.
Merge branch 'dev-bundle-node-0.8.18' into devel
Merge branch 'devel' into ddp-pre1