To prevent the trust dialog from appearing on iOS7 devices we need to make
sure that no PTP access is happening before usbmuxd starts. So we start as
early as possible so the device will be in trusted host state.
libusbmuxd has been split off and is now managed in a separate repository.
By the time of this commit, the repository is:
git clone http://git.sukimashita.com/libusbmuxd.git