DES / 3DES Performance Update

DES / 3DES Performance Update.
Inline en/decrypting gives additional ~25% performance.
100% compatible with the current DES/TribleDES.php
Strong testet on Windows/Linux 32/64bit with php4/5.0/5.1//5.2/5.3/5.4
SFTP: Fix broken mkdir

Thanks Antek88!
SSH2: CS adjustments
SSH2: another CS adjustment
Add an SCP class
Merge branch 'master' of https://github.com/phpseclib/phpseclib
SCP: Update example
SSH2: Add getBannerMessage() function
BigInteger: Docblock adjustments
Merge pull request #94 from petrich/DES-3DES-Performance-Update

DES/3DES performance update
DES: removed debug code

removed debug code
Random: use constant for windows test

BigInteger: Docblock adjustments
Merge branch 'master' of https://github.com/phpseclib/phpseclib
Random: remove comment for old code
Merge remote-tracking branch 'petrich/master' into twofish
SSH2: add twofish support
Added a branch alias for master
SSH2: Twofish typos
Merge pull request #98 from simensen/branch-alias

Added a branch alias for master
SSH2: Typo (Twofish related..)

Typo...