Added 'expath-exist-libs' submodule for 'xars' module.
Added 'ft-client' submodule for 'expath-exist-libs' submodule.
Added build section and assembly file for 'expath-ft-client-exist-lib
xar.
Reformat.
Moved resources for 'make-xar-mojo'.
Added unit test in java for 'make-xar-mojo'.