In CMake, define the project-wide source directory for the test build.

* CMakeLists.txt
  (SERF_SOURCE_DIR): New, used instead of CMAKE_CURRENT_SOURCE_DIR.
* test/CMakeLists.txt: Use SERF_SOURCE_DIR instead of CMAKE_SOURCE_DIR.

git-svn-id: https://svn.apache.org/repos/asf/serf/trunk@1835101 13f79535-47bb-0310-9956-ffa450edef68
2 files changed