jakarta-poi-2.5.1-bp154.1.31

- Added patch:
  * poi-encoding.patch
    + specify encoding ISO-8859-1 and fix jdk9 build

- Do not depend on ant-trax

- Cleanup with spec-cleaner
- Drop patch jakarta-poi-2.5.1_escher-test.patch which was never
  applied

- Fix build with new xerces-j2-xml-apis

- Move from jpackage-utils to javapackage-tools

- do not package LICENSE twice

- First release of version 2.5.1 in Suse (based on spec from jpackage.org 1.7)