Update FX to use new gnu style java command line options

We need to adapt to the new gnu style java command for many of the arguments we use - like -Xpatch -> --patch-module

This is known to affect
    * buildSrc/src/main/java/workaround/GradleJUnitWorker.java
    * build.gradle (generation of xpatch.args if not other places)
    * tools/scripts/make_xpatch.args
    * others ?
Also... change the paths so they are quoted to protect against paths with spaces in them.
Consider fixing the java.library.path to point to other than build/sdk

Once we change this, we will need to version check JIGSAW_BUILD

for the latest options, see: http://openjdk.java.net/jeps/293

-Xpatch ->
--patch-module <module>=<file>(:<file>)*

-addExport, -addReads ->
--add-reads <module>=<target-module>(,<target-module>)*
--add-exports <module>=<target-module>(,<target-module>)*

-mp, -modulepath ->
--module-path <path>, -p <path>
Override or augment a module with classes and resources in JAR files or directories.