Merge pull request #7533 from ritzalam/sign-screenshare-jar-expire-2019-05-28

bbb-screenshare/app/jws/lib/ffmpeg-linux-x86-svc2.jar

bbb-screenshare/app/jws/lib/ffmpeg-linux-x86_64-svc2.jar

bbb-screenshare/app/jws/lib/ffmpeg-macosx-x86_64-svc2.jar

bbb-screenshare/app/jws/lib/ffmpeg-win-x86-svc2.jar

bbb-screenshare/app/jws/lib/ffmpeg-win-x86_64-svc2.jar

bbb-screenshare/app/jws/lib/ffmpeg.jar

bbb-screenshare/app/jws/lib/javacv-screenshare-0.0.1.jar

...reenshare/jws/native-libs/ffmpeg-linux-x86/svc2/build.xml

...ws/native-libs/ffmpeg-linux-x86/svc2/resign-ffmpeg-jar.sh

...nshare/jws/native-libs/ffmpeg-linux-x86_64/svc2/build.xml

...native-libs/ffmpeg-linux-x86_64/svc2/resign-ffmpeg-jar.sh

...share/jws/native-libs/ffmpeg-macosx-x86_64/svc2/build.xml

...ative-libs/ffmpeg-macosx-x86_64/svc2/resign-ffmpeg-jar.sh

...enshare/jws/native-libs/ffmpeg-windows-x86/svc2/build.xml

.../native-libs/ffmpeg-windows-x86/svc2/resign-ffmpeg-jar.sh

...hare/jws/native-libs/ffmpeg-windows-x86_64/svc2/build.xml

...tive-libs/ffmpeg-windows-x86_64/svc2/resign-ffmpeg-jar.sh

...re/jws/native-libs/ffmpeg-windows-x86_64/svc2/sign-jar.sh

bbb-screenshare/jws/native-libs/unsigned-jars/build.xml

...ws/native-libs/unsigned-jars/javacv-screenshare-0.0.1.jar