changes:
- udev has diverged a lot, the udev.inc was based on a quite dated
version, thus doesn't reflect current status of udev, create a
new include file udev-new.inc to adapt
- separate libudev{,-dev,-dbg} apart from udev
- --with-udev-prefix is removed. change ${libexecdir} to
${base_libdir}/udev, which is described in INSTALL file.
- udev.pc is provided in ${datadir}/pkgconfig, since it's used
to indicate the existence of udev itself instead of development
headers and libs, pack it in udev instead of udev-dev
- udev-extras is disabled since we are missing libacl, this also
means gudev is missing as for now
- other cleanups, e.g. do_stage, do_install, EXTRA_OEMAKE
todo:
- udev-extras
- remove old udev versions
- rebase udev-145 on udev-new.inc as well
