real location of retroarch-joyconfig

i changed the directory to the retroarch-joyconfig binary, which is under the tools directory now. current builds will are pointing to the old location still. if this binary is supposed to be moved/copied over to the old one of /installdir/bin/ then that needs to be changed instead as it is not working that way currently
Merge pull request #519 from ProxyCell/patch-1

real location of retroarch-joyconfig