Avoid some compiler warnings.
Avoid some compiler warnings.

* subversion/libsvn_subr/skel.c:
  (svn_skel__append): rename LIST to LIST_SKEL. add a cast to avoid const
    warnings.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion