Tests: added Python input readline and iterator tests.

test/python/input_readline/wsgi.py

@@ -0,0 +1,20 @@
+def application(environ, start_response):
+    body = []
+    content_length = 0
+
+    while True:
+        l = environ['wsgi.input'].readline()
+        if not l:
+            break
+
+        body.append(l)
+        content_length += len(l)
+
+    start_response(
+        '200',
+        [
+            ('Content-Length', str(content_length)),
+            ('X-Lines-Count', str(len(body))),
+        ],
+    )
+    return body