Fix out-of-tree builds for "make check".
Fix out-of-tree builds for "make check".

Patch by: Peter Samuelson <peter{_at_}p12n.org>

* Makefile.in:
  (check): look in the source directory for the response files and the
    .pem file.


git-svn-id: 683495cb1553624b05a54e2ba9533425f69cf277@1521 61a7d7f5-40b7-0310-9c16-bb0ea8cb1845

coapp-packages/serf,coapp-packages/serf,coapp-packages/serf