move src/enc2 & enc2chk files to libxed.
move src/enc2 & enc2chk files to libxed.

  * this will matter when someone needs to link with more than one enc2*
    library.

Change-Id: I579c3a5e6342ee511aa4899be003cf0946283563
(cherry picked from commit 6917b9a786203f00e8158e56f65a31fa4920bca7)

intelxed/xed,intelxed/xed,intelxed/xed,intelxed/xed