PROTON-494: removed JNI binding

git-svn-id: https://svn.apache.org/repos/asf/qpid/proton/trunk@1560765 13f79535-47bb-0310-9956-ffa450edef68
PROTON-498: set the VALGRIND env var to the path to the valgrind executable

git-svn-id: https://svn.apache.org/repos/asf/qpid/proton/trunk@1562213 13f79535-47bb-0310-9956-ffa450edef68
PROTON-498: fix the CMake valgrind logic

git-svn-id: https://svn.apache.org/repos/asf/qpid/proton/trunk@1562224 13f79535-47bb-0310-9956-ffa450edef68