Don't override exec_prefix= and use --with-rootlibdir to copy
runtime libs to /lib while keeping most of the stuff in /usr.
With this change, we don't have to override pkgconfig, or manually
setup .so symlink. It's also friendlier towards builds with
enable-extras (which would require more additional fixes).
Enable build of static library, which will enable us to add explicit
udev support to static builds of dm/lvm.
Adjust start_udev:
- remount /dev if it's already mounted (due to initramfs or
CONFIG_DEVTMPFS_MOUNT), which allows us to set mount options
- add inodes limit safeguard
- verify udevd is not running before starting it
- remove 'settle' between subsystems/devices
Signed-off-by: Michal Soltys <soltys@ziu.info>
