Update bundled version of minilzo

This updates minilzo from version 2.03 to version 2.06 which
is like 3 years newer.

The main reason of this update is that older minilzo had some
strange valgrind warnings. Likely they're harmless, but it was
still annoying to troubleshot bakes with valgrind.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@54838 954f8c5b-7b00-dc11-b283-0030488c597c