Make pkg/path 1.0.0 and upgrade dependencies appropriately.
Make pkg/path 1.0.0 and upgrade dependencies appropriately.

All existing packages that use pkg/path (other than pkg/stack_trace,
which has already been updated) are compatible with both the pre-1.0
and post-1.0 path API, so I've marked their version constraints as
">=0.9.0 <2.0.0". I've also incremented their patch versions and I
intend to release new versions as soon as this CL lands.

R=alanknight@google.com, efortuna@google.com, jmesserly@google.com, rnystrom@google.com, scheglov@google.com

Review URL: https://codereview.chromium.org//110873002

git-svn-id: a8f079e7cfc3a289d8496d7b88aabbd5c45a3053@31005 260f80e4-7a28-3924-810f-c04153c831b5

astashov/intl,astashov/intl,dart-lang/intl