Build a package with ZBar java JNI and jar library
    
    Add an extra ZBar package with java libraries, just in case
    someone wants to use it inside a Java application.
    
    While here, change config to prefer using ImageMagick instead
    of GraphicsMagick, as this is the recommended conversion library.
    
    Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>