Fix typos (#97)

concurrent/futures/process.py

diff --git a/concurrent/futures/process.py b/concurrent/futures/process.py
index fa5b96f..bb327fa 100644
--- a/concurrent/futures/process.py
+++ b/concurrent/futures/process.py
@@ -57,7 +57,7 @@
 # interpreter to exit when there are still idle processes in a
 # ProcessPoolExecutor's process pool (i.e. shutdown() was not called). However,
 # allowing workers to die with the interpreter has two undesirable properties:
-#   - The workers would still be running during interpretor shutdown,
+#   - The workers would still be running during interpreter shutdown,
 #     meaning that they would fail in unpredictable ways.
 #   - The workers could be killed while evaluating a work item, which could
 #     be bad if the callable being evaluated has external side-effects e.g.
@@ -352,7 +352,7 @@
             self._result_queue.put(None)
             if wait:
                 self._queue_management_thread.join(sys.maxint)
-        # To reduce the risk of openning too many files, remove references to
+        # To reduce the risk of opening too many files, remove references to
         # objects that use file descriptors.
         self._queue_management_thread = None
         self._call_queue = None

concurrent/futures/thread.py

diff --git a/concurrent/futures/thread.py b/concurrent/futures/thread.py
index c0c5540..b9685ce 100644
--- a/concurrent/futures/thread.py
+++ b/concurrent/futures/thread.py
@@ -24,7 +24,7 @@
 # to exit when there are still idle threads in a ThreadPoolExecutor's thread
 # pool (i.e. shutdown() was not called). However, allowing workers to die with
 # the interpreter has two undesirable properties:
-#   - The workers would still be running during interpretor shutdown,
+#   - The workers would still be running during interpreter shutdown,
 #     meaning that they would fail in unpredictable ways.
 #   - The workers could be killed while evaluating a work item, which could
 #     be bad if the callable being evaluated has external side-effects e.g.

test_futures.py

diff --git a/test_futures.py b/test_futures.py
index 5ee4e71..37156ba 100644
--- a/test_futures.py
+++ b/test_futures.py
@@ -760,7 +760,7 @@
         self.assertEqual(SUCCESSFUL_FUTURE.result(timeout=0), 42)
 
     def test_result_with_success(self):
-        # TODO(brian@sweetapp.com): This test is timing dependant.
+        # TODO(brian@sweetapp.com): This test is timing dependent.
         def notification():
             # Wait until the main thread is waiting for the result.
             time.sleep(1)
@@ -773,7 +773,7 @@
         self.assertEqual(f1.result(timeout=5), 42)
 
     def test_result_with_cancel(self):
-        # TODO(brian@sweetapp.com): This test is timing dependant.
+        # TODO(brian@sweetapp.com): This test is timing dependent.
         def notification():
             # Wait until the main thread is waiting for the result.
             time.sleep(1)