First draft gzipped-records

100% test pass with one false failure, the result of a dictionary ordering issue in `tests.searchcommands.test_internals_v2.TestInternals.TestInternals.test_record_writer_with_recordings`.  We may be able to change to an OrderedDict to solve this problem.

Author: David Noble

splunklib/searchcommands/internals.py

@@ -24,7 +24,7 @@
 from urllib import unquote
 
 import csv
-import io
+import gzip
 import os
 import re
 import sys
@@ -424,7 +424,7 @@ def __str__(self):
 class Recorder(object):
 
     def __init__(self, path, f):
-        self._recording = io.open(path, 'wb')
+        self._recording = gzip.open(path + '.gz', 'wb')
         self._file = f
 
     def __getattr__(self, name):