Enhancements - Cmd object

- New Cmd object to handle localized commands, customReports and general
  command parsing.
- Localized new Subst methods.
- Relocate guess method from parse.cpp to text.cpp.
- Converted Att object to use new valid/parse scheme.
- Unit tests for Cmd object.
- Fixed att.t.cpp unit tests.

src/Cmd.h

@@ -0,0 +1,58 @@
+////////////////////////////////////////////////////////////////////////////////
+// task - a command line task list manager.
+//
+// Copyright 2006 - 2009, Paul Beckingham.
+// All rights reserved.
+//
+// This program is free software; you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free Software
+// Foundation; either version 2 of the License, or (at your option) any later
+// version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+// details.
+//
+// You should have received a copy of the GNU General Public License along with
+// this program; if not, write to the
+//
+//     Free Software Foundation, Inc.,
+//     51 Franklin Street, Fifth Floor,
+//     Boston, MA
+//     02110-1301
+//     USA
+//
+////////////////////////////////////////////////////////////////////////////////
+#ifndef INCLUDED_CMD
+#define INCLUDED_CMD
+
+#include <vector>
+#include <string>
+#include "Cmd.h"
+
+class Cmd
+{
+public:
+  Cmd ();                      // Default constructor
+  Cmd (const std::string&);    // Default constructor
+  ~Cmd ();                     // Destructor
+
+  bool valid       (const std::string&);
+  bool validCustom (const std::string&);
+  void parse       (const std::string&);
+
+public:
+  std::string command;
+
+private:
+  void loadCommands ();
+  void loadCustomReports ();
+
+private:
+  std::vector <std::string> commands;
+  std::vector <std::string> customReports;
+};
+
+#endif
+////////////////////////////////////////////////////////////////////////////////