Chg #2053 Corrections for more coherent CSecurityManager::generateRandomBytes() see PR 2604 discussion, unit tests.
Code style. Convert spaces to tabs.
Convert spaces to tabs.
Deleted unnecessary changelog.
Merge branch 'master' of git://github.com/yiisoft/yii into 2053-corrections-to-random-getters-see-PR-2604-discussion
mcrypt_create_iv() default is MCRYPT_DEV_RANDOM. generateRandomBytes() should use urandom.
Merge pull request #2615 from tom--/2053-corrections-to-random-getters-see-PR-2604-discussion

A more coherent CSecurityManager::generateRandomBytes