Extract out zlib module out of git.js

Remove zlib module from git.js. The idea is to move out code module by
module from git.js, and either write dart wrapper, or re-write in dart.
changing the bootstrap script to automatically add .precompiled.js
Include zlib dependency files.

Remove trailling whitespaces in git.js
Merge pull request #31 from dart-lang/split_js_file

Extract out zlib module out of git.js
Move misc_utils module out of git.js

Move misc_utils module out of git.js and make it global.
This module has no dependency. As a next step I will re-write it in
dart which will help to port other code to dart.
added a library name
Merge pull request #32 from dart-lang/spark-bootstrap

changing the bootstrap script to automatically add .precompiled.js
Merge pull request #33 from dart-lang/add_zlib_test

Move misc_utils module out of git.js
misc cleanups
merge with master
remove unused parts of spark.html
Merge pull request #34 from dart-lang/misc

Misc
Build version 0.0.2
Added "release" task to create a build for CWS. Fixed "archive" task to use content of build/polymer-build.
Fixed log
Workaround https://code.google.com/p/dart/issues/detail?id=14045: Use .dart.precompiled.js instead of .dart.js.
Improved comments. Made "release" task synchronous.
Merge pull request #36 from dinhviethoa/29-archive-release

Build improvement.
merge