jaxodraw-2.1.0-bp150.2.4

- Fix build with jdk9: specify java source and target 1.6
- Clean spec file and fix duplicate waste error

- Update jaxodraw.appdata.xml in keeping with updated appstream
  specifications; also update description, summary, other info
  in the metadata.

- Refer to Apache-2.0 licensing of certain source files in the
  spec file.
- Remove an unnecessary directory (not used for builds or
  packaged in rpms) with files potentially causing licensing
  issues.

- Fix builds for openSUSE < 13.2 and SLE 12 by making package
  own the appdata directory (/usr/share/appdata).

- Add jaxodraw-set-default-viewers.patch to set xdg-open as the
  default HTML and postscript viewers (can be changed at the user
  level).

- Initial package.