[LTP] [PATCH 7/7] docparse/Makefile: Do not abort on missing generators

[Petr Vorel]

Hi Cyril,

> Since we want to use the metadata.json in the testrunner it must bte
nit: typo s/bte/be

> build unconditionally.
According to docs:
  --with-metadata-generator=asciidoc|asciidoctor
  --disable-metadata      Disable metadata generation (both HTML and PDF,
                          default no)
  --disable-metadata-html Disable metadata HTML generation (default no)
  --enable-metadata-pdf   Enable metadata PDF generation (default no)

I'd like to have single option which does not create HTML and PDF (thus does not
require asciidoc|asciidoctor. I wonder if we could change build system to keep
--disable-metadata, build always docparse and json as we need, but with
./configured --disable-metadata just not run HTML and PDF generation?

Kind regards,
Petr