[aur-general] Adding MAINTAINER comment box

AUR, I think we should try to implement a comment box above the general comment box that can be edited ONLY by the package maintainer -- this is important for updates and information about more complex packages -- for example -- kernel26zenmm-git does not automatically have nvidia support built in and can be supplemented by the xf86-video-nvidia (i think thats the package name i'm just doing it from memory now) -- this is useful information that should not get lost in the main comments box -- i just wanted to throw this out there -- never too many documents -- especially when there are caveats -- hope everyone is well respectfully, -- jt