HONEYCOMB-10: fix issues with FindClass in multithreaded environments

Added jclass reference caching and updated JNI version to 1.8

Change-Id: Ie8dbbd4b91b90bf9e4e9a6148313e46056b0d67e
Signed-off-by: Marek Gradzki <mgradzki@cisco.com>
2 files changed