* Match literals in a case independent way....

src/assembler-re2k.h

Index: src/assembler-re2k.h
===================================================================
--- src/assembler-re2k.h	(revision 825)
+++ src/assembler-re2k.h	(working copy)
@@ -62,6 +62,8 @@
   // Checks current char register against a singleton.
   void CheckCharacter(uc16 c, Label* on_match);
   void CheckNotCharacter(uc16 c, Label* on_mismatch);
+  void OrThenCheckNotCharacter(uc16 c, uc16 mask, Label* on_mismatch);
+  void MinusOrThenCheckNotCharacter(uc16 c, uc16 mask, Label* on_mismatch);
 
   // Used to check current char register against a range.
   void CheckCharacterLT(uc16 limit, Label* on_less);