[Fixed] mounted speed hack checks
[Fixed] mounting while gallop is active only re-applies the speed bonus
if mounting the creature that galloped in the first place - mantis 4748

Change-Id: I6938e16ae433da866571da7cb10240125c9eaf83
Merge "[Fixed] mounted speed hack checks [Fixed] mounting while gallop is active only re-applies the speed bonus if mounting the creature that galloped in the first place - mantis 4748" into unstable