Use the standard way of locating dependencies in the CMake build.

* CMakeLists.txt:
  Add comment and policies about locating the external dependencies.
  (APR, APU, OPENSSL, ZLIB): Remove obsolete build options.
* build/FindAPRUtil.cmake (APRUtil_ROOT): Rename from APRUTIL_ROOT
   so that it conforms to the expected <PackageName>_ROOT pattern.


git-svn-id: https://svn.apache.org/repos/asf/serf/trunk@1841585 13f79535-47bb-0310-9956-ffa450edef68
2 files changed