Kergekoin?
Correct. Bitcoin 0.9 also has coin control now. From merge requests i can not see anything which would require hard forking.
Nice! So are you going to do it? I think the community and dev would embrace.
I just finished it and made pull request. It works just beautifully with my Windows wallet, but likely some testing is needed for linux and mac.
If you want to use it before officially confirmed:
https://www.dropbox.com/s/ibwj1p88q340tg9/Mintcoin%20with%20CC.zip
Default disclaimer: Im not responsible if you damage your wallet.dat with it. Please be sure you have a backup before overwriting!