Refactor pkg/path.

This CL does several things:

* Splits lib/path.dart into multiple libraries.

* Renames "Builder" to "Context".

* Makes the Context API match the top-level functions ("root" was
  renamed to "current" and "resolve" was renamed to "absolute").

* The top-level "absolute" function now takes multiple parts, to match
  [Context.absolute].

R=rnystrom@google.com
BUG=14981

Review URL: https://codereview.chromium.org//62753005

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/stack_trace@30423 260f80e4-7a28-3924-810f-c04153c831b5
1 file changed
tree: 193c8c7845fd0b2fb7011ddb0d81e5d52d4651d9
  1. pkgs/