Changed ability bonus values to be halved when collateral bloodlines equip sacred weapons

I changed ability bonus values to be halved when collateral bloodlines equip sacred weapons by learning an Elite skill etc.

In past versions, I added an effect to an Elite skill that allows them to equip weapons one rank higher, and when they reach rank S, collateral bloodlines can also use sacred weapons, but the system resulted in players being encouraged to give sacred weapons to collateral bloodlines. This change is to encourage their use by their original owners.

In this hack, sometimes the original owner may not join, so even after this change is made, I don't think you'll lose the fun of allowing someone other than the original owner to use the sacred weapons.

There are also cases where the bonus is halved according to the storyline, such as when Ishtore (chapters 5 to 7) equips the Loptr Sword, even if it is not due to an Elite skill.