[arch-dev-public] Xulrunner in [community]

TUs were asked over a year ago https://mailman.archlinux.org/pipermail/arch-dev-public/2012-August/023483.h... if any of them wanted to maintain xulrunner. I was not particularly interested then, but now that the package in [extra] is three versions out of date, I think we can do better. If it's okay to drop the chmsee package to the AUR, I will be able to make sure xulrunner stays up to date in [community]. I will test every version but will primarily use the ones that coinside with instantbird releases. Thanks :).