src/CMakeLists.txt: Always install .jar files in <prefix>/lib/java/
src/CMakeLists.txt: Always install .jar files in <prefix>/lib/java/

In certain cases (debian/ubuntu multi-arch machines) the jar files
were bing installed in <prefix>/lib/lib/java/.

Regardless of platform or architecture, these files need to be in
<prefix>/lib/java/ .

Signed-off-by: Jon Trulson <08664b19c2d4086eb239dd8ec32d593676a5b9e4@ics.com>

pylbert/upm,stefan-andritoiu/upm,intel-iot-devkit/upm,jontrulson/upm,jontrulson/upm,Propanu/upm,skiselev/upm,Jon-ICS/upm,g-vidal/upm,Propanu/upm,whbruce/upm,intel-iot-devkit/upm,jontrulson/upm,jontrulson/upm,nitirohilla/upm,nitirohilla/upm,whbruce/upm,Propanu/upm,stefan-andritoiu/upm,malikabhi05/upm,sasmita/upm,whbruce/upm,skiselev/upm,intel-iot-devkit/upm,sasmita/upm,spitfire88/upm,nitirohilla/upm,jontrulson/upm,stefan-andritoiu/upm,nitirohilla/upm,intel-iot-devkit/upm,skiselev/upm,Propanu/upm,g-vidal/upm,Propanu/upm,skiselev/upm,Jon-ICS/upm,g-vidal/upm,spitfire88/upm,pylbert/upm,spitfire88/upm,skiselev/upm,pylbert/upm,malikabhi05/upm,spitfire88/upm,malikabhi05/upm,intel-iot-devkit/upm,malikabhi05/upm,sasmita/upm,nitirohilla/upm,spitfire88/upm,g-vidal/upm,pylbert/upm,Propanu/upm,Jon-ICS/upm,malikabhi05/upm,stefan-andritoiu/upm,sasmita/upm,pylbert/upm,whbruce/upm,stefan-andritoiu/upm,g-vidal/upm,skiselev/upm,Jon-ICS/upm,stefan-andritoiu/upm,whbruce/upm,Jon-ICS/upm,intel-iot-devkit/upm,malikabhi05/upm,sasmita/upm,pylbert/upm,g-vidal/upm