Bootable JAR doesn't create install directories

The issue occurs with --install-dir Bootable JAR option,

In case the first entry to be unzipped is not a directory, the unzip fails because the install dir doesn't exist.

This issue is hidden on some platforms where the first entries are directories, in such case, directories hierarchy is created.

This issue impacts Arquilian container for Bootable JAR that contains a workaround for it.