Big unit reorganisation

* Renamed pynum2word to num2word
* Renamed num2word_* to lang_*
* Re-organised all unit headers
* Made imports relative

num2words/orderedmapping.py

@@ -0,0 +1,35 @@
+# Copyright (c) 2003, Taro Ogawa.  All Rights Reserved.
+# Copyright (c) 2013, Savoir-faire Linux inc.  All Rights Reserved.
+
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+# This library 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
+# Lesser General Public License for more details.
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+# MA 02110-1301 USA
+
+class OrderedMapping(dict):
+    def __init__(self, *pairs):
+        self.order = []
+        for key, val in pairs:
+            self[key] = val
+            
+    def __setitem__(self, key, val):
+        if key not in self:
+            self.order.append(key)
+        super(OrderedMapping, self).__setitem__(key, val)
+
+    def __iter__(self):
+        for item in self.order:
+            yield item
+
+    def __repr__(self):
+        out = ["%s: %s"%(repr(item), repr(self[item])) for item in self]
+        out = ", ".join(out)
+        return "{%s}"%out