Update libcups to v2.2.1
am: bfe95db54f

Change-Id: I3f8ec334fcc6b94e4ca53c089f4b720e92a06a35
tree: d1f6810ea9709047bfff1db1a371855bec4179e2
  1. cups/
  2. filter/
  3. LICENSE.txt
  4. update_libcups.sh