[Bug testsuite/69181] multiline.exp does not handle conditional compilation

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69181

--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Candidate patch posted as:
  https://gcc.gnu.org/ml/gcc-patches/2016-01/msg00496.html