bcel5_3-5.3-bp160.1.11

- Security fix: [bsc#1205125, CVE-2022-42920]
  * Apache Commons BCEL prior to 6.6.0 allows producing
    arbitrary bytecode via out-of-bounds writing
  * Add bcel-CVE-2022-42920.patch

- Build with source and target 8 to prepare for a possible removal
  of 1.6 compatibility

- Fix build with jdk9:
  * specify java source and target level 1.6
  * specify encoding of source files
- Clean spec file and fix rpmlint errors

- Move from jpackage-utils to javapackage-tools

- Remove redundant tags/sections from specfile

- Initial SUSE packaging of bcel5_3 (from jpackage.org 5.0)