Fixing: setting register 2 to a value

[sitdisch]

This makes it for me possible to set register 2 (respectively "1 of the default register) to the right value.
Best regards

[sitdisch]

Sorry @dfishburn , I didn't want to merge the last two commits from May 26 2017. These changes are only helpful for me and shouldn't be pulled to you. I didn't know that this would happen automatically, if I make changes in the same branch. I have solved that.

I only want to merge this commit. It changed not much but it works. I will try to explain in more detail what it solves. E.g.: You have set g:yankring_manage_numbered_reg = 1 and
copy ten variables like x9,..., x1, and x0 successively. x9 should then be in register "9, x8 in "8,..., and x0 in "0. This works, except for "1.

There is something else stored but not x1. That mean, "1 contains always the same value and not the right entries that should logically be there. However, when you copy something again the missing entry appears in "2 and the old value from "0 disappears. My solution fixes this bug and the old value of "0 appears in "1. Best Regards