sil-padauk-fonts-2.2-bp154.1.19

- amend spec file to reflect new font packaging scheme
  (see openFATE#313536);

- call spec-cleaner

- renamed sil-padauk -> sil-padauk-fonts

- license update: OFL-1.1
  Use SPDX format

- remove unnecessary buildrequires for too old distros

- update to 2.2.
  • Now conforms to Unicode 5.1 (there were encoding changes since March)
  • OT tables included, but not as strong as graphite rendering
  • OFL 1.1
  • Add PDAM 4 characters
  • Add OT from Keith S

- new package: sil-padauk, version 2.1.