Also:
- Invoke the configure script (bz 1740196).
- Add LGPLv2 to License due to incremental-cycles.
- Add -emacs subpackage and byte compile the Emacs Lisp files.
- Drop upstreamed 15c04b09a8c06871635d5fd98c3a37089bbde6d9.patch.
- Add -doc-emphasis and -doc-scheme patches.
- Run the unit tests in %check.