this fixes failure in test__ssl.py on Windows

Fix issue #86: bytearrays are not supported by pywsgi. based on pull request #174 by Aaron Westendorf.

- on Python >= 2.6, where bytearray is present, it is now used to prepare the data
- on Python 2.5, string.join is continued to be used
- add test for bytearrays to test__pywsgi.py

- enable python 2.5
- disable "noinotify" and "nosigmask" (to reduce total testing time)
- update known_failures.txt with 2.5 failures that still need fixing

- instead manually fix imports in all tests
- add xtest_stdlib.py to check if all imports were fixed

- make test__threading_vs_settrace.py compatible with 2.5 (still fails though)
- fix test__socket.py
- fix test__ssl.py
- 2.5/test_thread.py: reduce all delays 10 times

- previously known as greentest/expected_failures.txt
- add it to MANIFEST.in
- make wintest.py use it

now it's possible to specify platform, environ and interpreter
also expected and unexpected failures are reported separately now

- split it into 3 files
- use ssl instead of socket.ssl
- make it possible to check both regular sockets and gevent sockets

- test__subprocess.py: ignore test_nonblock_remove on win32
- test__example_portforwarder.py
- test__examples.py: ignore geventsendfile.py and psycopg2 on Windows
- testrunner.py: set timeout to 3 min
  some systems have really slow DNS and test__socket_dns.py fails
- test___example_servers.py: use 127.0.0.1 instead of localhost
  helps on Windows server where DNS calls are slow for some reason

always calculate it from environ and file name

it failed with LoopError because thread pool was accidentally used inside thread pool

set_version.py: add --dry-run option
set_version.py: update regexes to match only start of the line
set_version.py: recognize 'dev' as a version
makedist.py: use --version option instead of argument
makedist.py: show git branch

see http://bugs.python.org/issue7735

- remove waitall() from gevent/event.py
- reimplement joinall() with wait()
- remove joinall from __all__
- Hub.join() no longer accepts event= argument

- add result attribute to subprocess.Popen which is an AsyncResult that
  receives return code once the process is finished
- wait() on Windows now has timeout argument and only spawns one thread

- add patch_sys() which patches stdin,stdout,stderr
- add sys=False argument to patch_all()
- remove the module docstring (it's not up to date)

make __enter__ and __exit__ truly noop (previously they called acquire/release)