Fix for the issue 3541
Changed the get/setSalt in Mcrypt and BlockCipher + added the setKey in Filter\Encrypt and Filter\Decrypt
Moved the setSalt outside the loop in testEncryptDecrypt
Added the getOriginalSalt() in Mcrypt and BlockCipher
Fixed CS issue
Merge branch 'hotfix/3445'

Close #3445
Removed check in getKey of Zend\Cryp\Symmetric\Mcrypt
Merge branch 'hotfix/zf3541' of git://github.com/ezimuel/zf2 into hotfix/3550
Merge branch 'hotfix/3550' into develop

Forward port #3550