Memory API feature page

While the memory API is not a feature, it deserves a feature page, so I can put the TODO list there:

http://wiki.qemu.org/Features/Memory_API

Please consider helping out. Device conversions are easy, if boring, and there's no end to them. There is a lot of more interesting work on the core itself, but I'd like to defer it until conversion is complete.

error compiling committee.c: too many arguments to function