jMAVSim: try new libs with newer Java versions

This is an attempt to get jMAVSim to run with Java9+.

Tools/jMAVSim

@@ -1 +1 @@
-Subproject commit eb62cd2766358a19490c1314f7eddf0391407d62
+Subproject commit 14ce7868fb29b8b05cdecf4e9a76b318839302e9

Tools/jmavsim_run.sh

@@ -56,31 +56,7 @@ if [ "$HEADLESS" = "1" ]; then
     extra_args="$extra_args -no-gui"
 fi
 
-# jMAVSim crashes with Java 9 on macOS, therefore we need to use Java 8
-if [ "$(uname)" == "Darwin" ]; then
-    bold=$(tput bold)
-    normal=$(tput sgr0)
-    if ! /usr/libexec/java_home -V 2>&1 | grep --quiet "1.8\|Java SE 8" ; then
-        echo "${bold}You need to have Java 8 installed for macOS, for more info, see:${normal}"
-        echo "${bold}https://dev.px4.io/master/en/simulation/jmavsim.html#macos${normal}"
-        exit 1
-    fi
-    export JAVA_HOME=`/usr/libexec/java_home -v 1.8`
-elif [ "$(uname)" == "Linux" ]; then
-    if ! java -version 2>&1 | grep --quiet "1.8" ; then
-        echo "${bold}You need to use Java 8, for more info, see:${normal}"
-        echo "${bold}https://dev.px4.io/master/en/simulation/jmavsim.html#ubuntu${normal}"
-        exit 1
-    fi
-fi
-
 ant create_run_jar copy_res
 cd out/production
 
-java -XX:GCTimeRatio=20 -Djava.ext.dirs= -Djavax.accessibility.assistive_technologies=" " -jar jmavsim_run.jar $device $extra_args
-ret=$?
-if [ $ret -ne 0 -a $ret -ne 130 ]; then # 130 is Ctrl-C
-	# if the start of java fails, it's probably because the GC option is not
-	# understood. Try starting without it
-	java -Djava.ext.dirs= -Djavax.accessibility.assistive_technologies=" " -jar jmavsim_run.jar $device $extra_args
-fi
+java -XX:GCTimeRatio=20 -Djava.ext.dirs= -jar jmavsim_run.jar $device $extra_args