CFB didn't always work in continuous mode
Fixed CFB Decrypt(). Fixed OFB warnings

Fixed/rewritten: Decrypt() in CFB mode to work clean with enableContinuousBuffer()

Fixed: PHP's strlen(array()) warning in OFB mode,

Fixed: disableContinuousBuffer() clear's now also the $enbuffer/$debuffer arrays so that multiple calls to enable/disableContinuousBuffer() will work without old buffers
Merge remote-tracking branch 'petrich/patch-2' into petrich

Conflicts:
	phpseclib/Crypt/Rijndael.php
CS adjustments to petrich's code and optimizations
AES.php in mcrypt mode always treated CFB as though it was a continuous cipher
Merge remote-tracking branch 'origin/petrich'