Merge pull request #164 from bantu/master

Partial revert of 9f1108e52e4787610a488868d774992e1ca28979.
RSA: putty keys weren't being formatted correctly
Merge branch 'master' of https://github.com/phpseclib/phpseclib
Update SSH2.php

Use of undefined property: "$this->bitmask".

In context, it seems that it should reference the "bitmap" property.
Merge pull request #167 from phonzie/patch-2

SSH2.php: Use of undefined property: "$this->bitmask"
SFTP_Stream: Fixed typo in _parse_path

typo: isset($this->contenxt)
should be $this->context
Merge pull request #168 from phonzie/patch-3

SFTP_Stream: Fixed typo in _parse_path

* phonzie/patch-3:
  SFTP_Stream: Fixed typo in _parse_path