Better support for bleeding mode with subspecs.

lib/cocoapods/resolver.rb

@@ -65,7 +65,7 @@ module Pod
           @loaded_specs << spec.name
           @specs[spec.name] = spec
           spec.activate_platform(target_definition.platform)
-          spec.bleeding = dependency.bleeding?
+          spec.top_level_parent.bleeding = dependency.bleeding?
           # And recursively load the dependencies of the spec.
           find_dependency_specs(spec, spec.dependencies, target_definition) if spec.dependencies
         end

lib/cocoapods/specification.rb

@@ -463,7 +463,7 @@ module Pod
 
     def to_s
       result = "#{name} (#{version})"
-      result << " [BLEEDING]" if bleeding?
+      result << " [BLEEDING]" if top_level_parent.bleeding?
       result
     end