Bring in the latest version of pub.

R=rnystrom@google.com

Review URL: https://codereview.chromium.org/1491933003 .

CHANGELOG.md

@@ -19,6 +19,33 @@
   * `Platform` added an `isiOS` getter and `Platform.operatingSystem` may now
     return `ios`.
 
+### Tool changes
+
+* Pub
+
+  * **Breaking:** Pub now eagerly emits an error when a pubspec's "name" field
+    is not a valid Dart identifier. Since packages with non-identifier names
+    were never allowed to be published, and some of them already caused crashes
+    when being written to a `.packages` file, this is unlikely to break many
+    people in practice.
+
+  * `pub serve` now GZIPs the assets it serves to make load times more similar
+    to real-world use-cases.
+
+  * `pub deps` now supports a `--no-dev` flag, which causes it to emit the
+    dependency tree as it would be if no `dev_dependencies` were in use. This
+    makes it easier to see your package's dependency footprint as your users
+    will experience it.
+
+  * `pub global run` now detects when a global executable's SDK constraint is no
+    longer met and errors out, rather than trying to run the executable anyway.
+
+  * Fixed a crashing bug when using `pub global run` on a global script that
+    didn't exist.
+
+  * Fixed a crashing bug when a pubspec contains a dependency without a source
+    declared.
+
 ## 1.13.0 - 2015-11-18
 
 ### Core library changes

DEPS

@@ -74,7 +74,7 @@ vars = {
   "metatest_rev": "@e5aa8e4e19fc4188ac2f6d38368a47d8f07c3df1",
   "mime_rev": "@75890811d4af5af080351ba8a2853ad4c8df98dd",
   "mustache4dart_rev" : "@5724cfd85151e5b6b53ddcd3380daf188fe47f92",
-  "oauth2_rev": "@1bff41f4d54505c36f2d1a001b83b8b745c452f5",
+  "oauth2_tag": "@1.0.0",
   "observe_rev": "@eee2b8ec34236fa46982575fbccff84f61202ac6",
   "observatory_pub_packages_rev": "@5c199c5954146747f75ed127871207718dc87786",
   "package_config_rev": "@0.1.3",
@@ -83,7 +83,7 @@ vars = {
   "ply_rev": "@604b32590ffad5cbb82e4afef1d305512d06ae93",
   "plugin_tag": "@0.1.0",
   "pool_rev": "@e454b4b54d2987e8d2f0fbd3ac519641ada9bd0f",
-  "pub_rev": "@1c08b841158e33b8090bb07e5c39df830db58d44",
+  "pub_rev": "@8c091bf6332e8b392fdac63ae297426fb65ed925",
   "pub_cache_tag": "@v0.1.0",
   "pub_semver_tag": "@1.2.1",
   "quiver_tag": "@0.21.4",
@@ -230,7 +230,7 @@ deps = {
       + "/external/github.com/valotas/mustache4dart.git"
       + Var("mustache4dart_rev"),
   Var("dart_root") + "/third_party/pkg/oauth2":
-      (Var("github_mirror") % "oauth2") + Var("oauth2_rev"),
+      (Var("github_mirror") % "oauth2") + Var("oauth2_tag"),
   Var("dart_root") + "/third_party/pkg/observe":
       (Var("github_mirror") % "observe") + Var("observe_rev"),
   Var("dart_root") + "/third_party/observatory_pub_packages":