Move datetime_tz package under nilmdb.utils

datetime_tz isn't readily available, so it's a lot easier to just
package it within the nilmdb tree.

.coveragerc

@@ -7,3 +7,4 @@
 exclude_lines =
 	pragma: no cover
 	if 0:
+omit = nilmdb/utils/datetime_tz*

nilmdb/cmdline/cmdline.py

@@ -2,8 +2,8 @@
 
 import nilmdb
 from nilmdb.utils.printf import *
+from nilmdb.utils import datetime_tz
 
-import datetime_tz
 import dateutil.parser
 import sys
 import re

nilmdb/utils/timestamper.py

@@ -1,10 +1,10 @@
 """File-like objects that add timestamps to the input lines"""
 
 from nilmdb.utils.printf import *
+from nilmdb.utils import datetime_tz
 
 import time
 import os
-import datetime_tz
 
 class Timestamper(object):
     """A file-like object that adds timestamps to lines of an input file."""

setup.py

@@ -32,7 +32,6 @@ setup(name='nilmdb',
                         ],
       install_requires = [ 'distribute',
                            'decorator',
-                           'datetime_tz',
                            ],
       packages = [ 'nilmdb',
                    'nilmdb.utils',

tests/test_client.py

@@ -4,8 +4,7 @@ import nilmdb
 from nilmdb.utils.printf import *
 from nilmdb.utils import timestamper
 from nilmdb.client import ClientError, ServerError
-
-import datetime_tz
+from nilmdb.utils import datetime_tz
 
 from nose.tools import *
 from nose.tools import assert_raises

tests/test_cmdline.py

@@ -3,12 +3,12 @@
 import nilmdb
 from nilmdb.utils.printf import *
 import nilmdb.cmdline
+from nilmdb.utils import datetime_tz
 
 import unittest
 from nose.tools import *
 from nose.tools import assert_raises
 import itertools
-import datetime_tz
 import os
 import re
 import shutil

tests/test_interval.py

@@ -2,7 +2,7 @@
 
 import nilmdb
 from nilmdb.utils.printf import *
-import datetime_tz
+from nilmdb.utils import datetime_tz
 
 from nose.tools import *
 from nose.tools import assert_raises

tests/test_timestamper.py

@@ -1,7 +1,6 @@
 import nilmdb
 from nilmdb.utils.printf import *
-
-import datetime_tz
+from nilmdb.utils import datetime_tz
 
 from nose.tools import *
 from nose.tools import assert_raises