Make some methods public for ZString.

ZString.h

@@ -370,7 +370,9 @@ namespace coreutils {
       
       bool ifCRLF();
       
-//    void nextChar();
+      void nextChar();
+      
+      bool boolValue();
       
     protected:
       char *data;
@@ -378,8 +380,6 @@ namespace coreutils {
       size_t length;
       char *cdata = NULL;
       std::vector<ZString> list;
-    bool boolValue();
-    void nextChar();
       
     private:
       std::stack<char *> stack;