Remove lazy initialization in TokenizedCharSequence
Remove unused imports.
Merge pull request #180 from devesh/patch-1

Remove unused imports.
Fix idea project resource patterns.

For a project that has a number of various resource files, this will now
generate:

"?*.json;?*.creds"

Rather than

?*{'.creds?': True, '.json': True}

Which Intellij (12) cannot interpret.
Merge pull request #182 from UrbanCompass/fix_idea_resource_patterns

Fix idea project resource patterns.
 Use a relocatable pip env for bootstrapping to work around truncation of fully qualified pip script shebangs in deeply nested dirs.

RB_ID=143585
Merge remote-tracking branch 'twitter/master'