util-linux: upgrade to 2.28

util-linux: upgrade to 2.28

ptest is disabled as the related codes are changed a lot, and the
related patches are removed.

util-linux-ng-2.16-mount_lock_path.patch is removed because there's
no _PATH_MOUNTED_LOCK in the latest codes.

util-linux-native.patch is removed because 2.28 version of util-linux
has taken mkostemp into consideration and provide fallback if mkostemp
fails.

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>