return Pathname instead of string, remove obsolete comment

lib/cocoapods/external_sources.rb

@@ -368,10 +368,10 @@ module Pod
 
       # @!group Helpers
 
-      # @return [String] the path as declared in the podspec
+      # @return [Pathname] the path as declared in the podspec
       #
       def declared_path
-        (params[:path] || params[:local]).to_s
+        Pathname.new params[:path] || params[:local]
       end
       
       # @return [Pathname] the path of the podspec.

lib/cocoapods/sandbox.rb

@@ -338,9 +338,6 @@ module Pod
     # @param  [#to_s] path
     #         The local path where the Pod is stored.
     #
-    # @param  [Bool] was_absolute
-    #         True if the specified local path was absolute.
-    #
     # @return [void]
     #
     def store_local_path(name, path)