Support libtidy in buster of architecture amd64

[spk]

Hi, this add support for Debian buster libtidy path

cf https://packages.debian.org/buster/amd64/libtidy5deb1/filelist

Can be tested with this Dockerfile:

FROM debian:buster-slim

WORKDIR /usr/local/src
RUN set -ex \
    && apt-get update -qqy \
    && apt-get -qqy --no-install-recommends install \
        build-essential libtidy-dev ruby-dev bundler git \
    && apt-get purge -y \
    && apt-get autoremove -y \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
COPY . .
RUN bundle install

Cheers!

[libc]

Hello!

Thank you for the PR!

I actually want to stop this silly business of guessing the path to the library. I think the only reason I included it in the first place is because ffi didn't look in /opt at the time.

If it would just have ffi_lib('tidy') it seems to work just fine with the Dockerfile you mentioned. I'd rather have that. Do you want to change the PR to a cleaner version of pseudo-code below?

begin
  ffi_lib(Tidy.library_path || 'tidy')
rescue LoadError
  ffi_lib(Dir.glob[...])
rescue LoadError
  raise ...
end

Cheers.

[spk]

Hello! Thanks for the feedback, sure I see what you mean I will try to improve this PR with your recommendations

[spk]

I'm found on https://github.com/ffi/ffi/wiki/Loading-Libraries#linux-packages that we can just put first the tidy and then the others hope 9c8d05e is ok for you @libc ?

[libc]

Yep. Thank you.

[libc]

I put version 1.0 out with this change.

Cheers