Code Reorganization

- Eliminated the parser lib, merged into task.  Failed experiment.

src/Arg.h

@@ -0,0 +1,61 @@
+////////////////////////////////////////////////////////////////////////////////
+// taskwarrior - a command line task list manager.
+//
+// Copyright 2006-2013, Paul Beckingham, Federico Hernandez.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// http://www.opensource.org/licenses/mit-license.php
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#ifndef INCLUDED_ARG
+#define INCLUDED_ARG
+
+#include <string>
+
+class Arg
+{
+public:
+  enum category {cat_none=1, cat_terminator, cat_program, cat_command, cat_rc, cat_override, cat_attr, cat_attmod, cat_id, cat_uuid, cat_subst, cat_pattern, cat_rx, cat_tag, cat_dom_, cat_dom, cat_op, cat_literal};
+  enum type     {type_none=20, type_pseudo, type_bool, type_string, type_date, type_duration, type_number};
+
+  Arg ();
+  Arg (const std::string&);
+  Arg (const std::string&, const category);
+  Arg (const std::string&, const type, const category);
+  Arg (const Arg&);
+  Arg& operator= (const Arg&);
+  bool operator== (const Arg&) const;
+
+  static const type type_id (const std::string&);
+  static const std::string type_name (type);
+
+  static const category category_id (const std::string&);
+  static const std::string category_name (category);
+
+public:
+  std::string _value;    // Interpreted value
+  std::string _raw;      // Raw input token, never modified
+  type        _type;     // Data type
+  category    _category; // Categorized argument
+};
+
+#endif
+////////////////////////////////////////////////////////////////////////////////