changes:
- separate the build system to ea-acl.inc, it is also used by
upcoming acl (ea stands for extended attributes)
- the .so.* is moved to /lib, so it can be used by packages like
udev
- change absolute symbolic links to relative path, code inspired
by udev
- manual fix to .la
Signed-off-by: Qing He <qing.he@intel.com>