[LocalSource] Tuning.

lib/cocoapods/local_pod.rb

@@ -518,7 +518,7 @@ module Pod
       end
 
       def root
-        Pathname.new(@top_specification.defined_in_file).dirname
+        @root ||= Pathname.new(@top_specification.source[:local]).expand_path
       end
 
       def implode

lib/cocoapods/specification.rb

@@ -390,12 +390,8 @@ module Pod
     end
 
     def pod_destroot
-      if local?
-        local_path
-      else
       config.project_pods_root + top_level_parent.name
     end
-    end
 
     def self.pattern_list(patterns)
       if patterns.is_a?(Array) && (!defined?(Rake) || !patterns.is_a?(Rake::FileList))