PROTON-185: Proton-C build fails with older versions of cmake - Turn of checking for undefined librarys symbols for older versions   of cmake as there are bugs in which libraries get linked
PROTON-185: Proton-C build fails with older versions of cmake
- Turn of checking for undefined librarys symbols for older versions
  of cmake as there are bugs in which libraries get linked

git-svn-id: 33ed6c3feaacb64944efc691d1ae8e09b17f2bf9@1421586 13f79535-47bb-0310-9956-ffa450edef68

astitcher/qpid-proton-old,astitcher/qpid-proton-old,astitcher/qpid-proton-old,astitcher/qpid-proton-old,astitcher/qpid-proton-old,astitcher/qpid-proton-old,astitcher/qpid-proton-old,astitcher/qpid-proton-old