Address compilation issues with Java > 1.8
Address compilation issues with Java > 1.8

This patch addresses the changes in the JDK to build headers (javah no
longer available)

Change-Id: I3e94b1cf97c8c474535c26b75ea08379338fe0af
Signed-off-by: Marco Varlese <a9ee8e267a5232c6e20784faabf46e21d99abe79@suse.com>

chrisy/vpp,vpp-dev/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,vpp-dev/vpp,vpp-dev/vpp,chrisy/vpp,vpp-dev/vpp,FDio/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,vpp-dev/vpp,vpp-dev/vpp,FDio/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp