Swapping add/xor operations in taricha2-512 for consistency
Revert "Swapping add/xor operations in taricha2-512 for consistency"

This reverts commit 999014d99f26d339fc8b08b8335834e739c5b117.
Revert "Made a change to taricha2-512 which improves collision resistance for a slight performance cost"
Changes probably don't improve collision resistance

This reverts commit c2918e5c547e3aabde2640feebe4047998ad1591.