Updated *.pak file format to support both UTF8 and UTF16

tools/grit/grit/node/include.py

Index: tools/grit/grit/node/include.py
diff --git a/tools/grit/grit/node/include.py b/tools/grit/grit/node/include.py
index b073bc725cb0f9b30460fe55a5739a273c1445b9..dc29315e5a809307e835ecba4d948b9833109648 100644
--- a/tools/grit/grit/node/include.py
+++ b/tools/grit/grit/node/include.py
@@ -74,7 +74,7 @@ class IncludeNode(base.Node):
     '''
     return self.FilenameToOpen()
 
-  def GetDataPackPair(self, lang):
+  def GetDataPackPair(self, lang, encoding):
     '''Returns a (id, string) pair that represents the resource id and raw
     bytes of the data.  This is used to generate the data pack data file.
     '''
@@ -90,6 +90,8 @@ class IncludeNode(base.Node):
       data = infile.read()
       infile.close()
 
+    # Include does not care about the encoding, because it only returns binary
+    # data.
     return id, data
 
   def Flatten(self, output_dir):
@@ -136,4 +138,3 @@ class IncludeNode(base.Node):
     node.EndParsing()
     return node
   Construct = staticmethod(Construct)
-