Add Go language module, resources

This introduces a new GoResource category of resource. GoResources
have a specialized stage method which allows a resource to stage
itself into a gopath.

The new Go language module provides a one-liner to stage all
GoResources present in the formula.

1 files changed, 6 insertions, 0 deletions

diff --git a/Library/Homebrew/resource.rb b/Library/Homebrew/resource.rb
index 66372ad3e..97dcdf976 100644
--- a/Library/Homebrew/resource.rb
+++ b/Library/Homebrew/resource.rb
@@ -130,4 +130,10 @@ class Resource
       raise TypeError, "version '#{val.inspect}' should be a string"
     end
   end
+
+  class Go < Resource
+    def stage target
+      super(target/name)
+    end
+  end
 end