Don't allow running global executables outside of bin.

sdk/lib/_internal/pub/lib/src/command/global_run.dart

Index: sdk/lib/_internal/pub/lib/src/command/global_run.dart
diff --git a/sdk/lib/_internal/pub/lib/src/command/global_run.dart b/sdk/lib/_internal/pub/lib/src/command/global_run.dart
index 707fdea4c1592f5dbe612908a9c4868d19361f7d..edc19b860492892c684ddf509c491f791bea5a66 100644
--- a/sdk/lib/_internal/pub/lib/src/command/global_run.dart
+++ b/sdk/lib/_internal/pub/lib/src/command/global_run.dart
@@ -42,7 +42,8 @@ class GlobalRunCommand extends PubCommand {
     var args = commandOptions.rest.skip(2);
 
     return globals.find(package).then((entrypoint) {
-      return runExecutable(this, entrypoint, package, executable, args);
+      return runExecutable(this, entrypoint, package, executable, args,
+          isGlobal: true);
     }).then(flushThenExit);
   }
 }