Update to 1.9.3

• While I'm here:
  • Fix LICENSE
  • Add LICENSE_FILE
  • Add missing LIB_DEPENDS
  • Use WRKSRC_SUBDIR
  • Simplify regex
  • Use MAKE_CMD
  • Merge pre-install: into do-install:

PR: 216192
Submitted by: Attila Nagy <bra@fsn.hu> (maintainer)