Add constants from httplib to http.client (issue #137)

This patch imports the complete set of constants from Python 2.7.10's httplib module into http.client.

Author: edschofield

src/http/client.py

@@ -4,3 +4,77 @@
 assert sys.version_info[0] < 3
 
 from httplib import *
+
+# These constants aren't included in __all__ in httplib.py:
+
+from httplib import (HTTP_PORT,
+                     HTTPS_PORT,
+
+                     _CS_IDLE,
+                     _CS_REQ_STARTED,
+                     _CS_REQ_SENT,
+
+                     CONTINUE,
+                     SWITCHING_PROTOCOLS,
+                     PROCESSING,
+
+                     OK,
+                     CREATED,
+                     ACCEPTED,
+                     NON_AUTHORITATIVE_INFORMATION,
+                     NO_CONTENT,
+                     RESET_CONTENT,
+                     PARTIAL_CONTENT,
+                     MULTI_STATUS,
+                     IM_USED,
+
+                     MULTIPLE_CHOICES,
+                     MOVED_PERMANENTLY,
+                     FOUND,
+                     SEE_OTHER,
+                     NOT_MODIFIED,
+                     USE_PROXY,
+                     TEMPORARY_REDIRECT,
+
+                     BAD_REQUEST,
+                     UNAUTHORIZED,
+                     PAYMENT_REQUIRED,
+                     FORBIDDEN,
+                     NOT_FOUND,
+                     METHOD_NOT_ALLOWED,
+                     NOT_ACCEPTABLE,
+                     PROXY_AUTHENTICATION_REQUIRED,
+                     REQUEST_TIMEOUT,
+                     CONFLICT,
+                     GONE,
+                     LENGTH_REQUIRED,
+                     PRECONDITION_FAILED,
+                     REQUEST_ENTITY_TOO_LARGE,
+                     REQUEST_URI_TOO_LONG,
+                     UNSUPPORTED_MEDIA_TYPE,
+                     REQUESTED_RANGE_NOT_SATISFIABLE,
+                     EXPECTATION_FAILED,
+                     UNPROCESSABLE_ENTITY,
+                     LOCKED,
+                     FAILED_DEPENDENCY,
+                     UPGRADE_REQUIRED,
+
+                     INTERNAL_SERVER_ERROR,
+                     NOT_IMPLEMENTED,
+                     BAD_GATEWAY,
+                     SERVICE_UNAVAILABLE,
+                     GATEWAY_TIMEOUT,
+                     HTTP_VERSION_NOT_SUPPORTED,
+                     INSUFFICIENT_STORAGE,
+                     NOT_EXTENDED,
+
+                     MAXAMOUNT,
+                     _MAXLINE,
+                     _MAXHEADERS,
+                     _is_legal_header_name,
+                     _is_illegal_header_value,
+                     _METHODS_EXPECTING_BODY,
+
+                     LineTooLong,
+                     LineAndFileWrapper,
+                    )