8027575: b113 causing a lot of memory allocation and regression for wls_webapp_atomics
Summary: Reduce buffer allocation and do multiple cipher encryption/decryption calls.
Reviewed-by: xuelei, ascarpino

8026943: SQE test jce/Global/Cipher/SameBuffer failed
Summary: Always use different input/output buffers when calling FeedbackCipher objects
Reviewed-by: mullan