Merge #800: Binaries: add ppc64 and ppc64le

89a2ab7 Binaries: add ppc64 and ppc64le (David A. Harding)

Pull request description:

  22.0 adds two new binaries; this adds them to the download page.  Preview:

  ![2021-09-14-15_10_05_582194435](https://user-images.githubusercontent.com/61096/133354069-45c3aa90-ce16-4bd7-8b56-da4fdbea8413.png)

  Travis is dead, but my local tests pass and they include a test to ensure all `class="dl"` links on the Download page point to downloadable files.

  <details>

  ```text
  $ make
  bundle exec jekyll clean
  Configuration file: /home/harding/bitcoincore.org/_config.yml
             Cleaner: Removing /home/harding/bitcoincore.org/_site...
             Cleaner: Removing /home/harding/bitcoincore.org/.jekyll-metadata...
             Cleaner: Removing .sass-cache...
  bundle exec jekyll build --future --drafts --unpublished
  Configuration file: /home/harding/bitcoincore.org/_config.yml
              Source: /home/harding/bitcoincore.org
         Destination: /home/harding/bitcoincore.org/_site
   Incremental build: disabled. Enable with --incremental
        Generating...
                      done in 64.248 seconds.
   Auto-regeneration: disabled. Use --watch to enable.
  ## Check for broken Markdown reference-style links that are displayed in text unchanged, e.g. [broken][broken link]
  ! find _site/ -name '*.html' | xargs grep ']\[' | grep -v skip-test | grep .
  ## Check for malformed HTML and broken internal links
  bash -c "set -o pipefail ; bundle exec htmlproofer --check-html --disable-external --url-ignore '/^\/bin/.*/' ./_site | cat"
  Running ["LinkCheck", "ScriptCheck", "ImageCheck", "HtmlCheck"] on ["./_site"] on *.html...

  Ran on 1421 files!

  HTML-Proofer finished successfully.
  ## Check that links on the /en/download page point to the separately-stored binaries in /bin
  contrib/qa/test-binary-availability.sh && echo "SUCCESS checking URLs for binaries"
  SUCCESS checking URLs for binaries
  ```

  <details>

Top commit has no ACKs.

Tree-SHA512: 02c1ff81b1d77ee982cf4e81fa83880f237378ca6047588a1d49b0ae94e465d2096064ba77c7acafeee50d3b296d89d754ec87213ff2b93a52684843869d9ffe

Author: harding

_data/binaries.yaml

@@ -4,3 +4,5 @@ macdmg: "-osx-signed.dmg"
 mactar: "osx64.tar.gz"
 lin64: "x86_64-linux-gnu.tar.gz"
 riscv64: "riscv64-linux-gnu"
+ppc64: "powerpc64-linux-gnu"
+ppc64le: "powerpc64le-linux-gnu"

_includes/templates/download.html

@@ -76,6 +76,15 @@ <h2>{{ page.latestversion }} {{CURRENT_RELEASE}} <a type="application/rss+xml" h
             <span><a href="{{ PATH_PREFIX }}/{{ FILE_PREFIX }}-{{ site.data.binaries.riscv64 }}.tar.gz" class="dl" id="lin64riscv">64 bit</a></span>
         </span>
       </div>
+      <div>
+        <img src="/assets/images/os/med_linux.png" alt="linux">
+        <span>
+          <a href="{{ PATH_PREFIX }}/{{ FILE_PREFIX }}-{{ site.data.binaries.ppc64le }}.tar.gz" class="dl">PPC64 Linux</a>
+            <span><a href="{{ PATH_PREFIX }}/{{ FILE_PREFIX }}-{{ site.data.binaries.ppc64 }}.tar.gz" class="dl" id="lin64ppc">64 bit</a>
+            -
+            <a href="{{ PATH_PREFIX }}/{{ FILE_PREFIX }}-{{ site.data.binaries.ppc64le }}.tar.gz" class="dl" id="lin64ppcle">64 bit LE</a></span>
+        </span>
+      </div>
       <div>
         <img src="/assets/images/os/med_snap.svg" alt="Snap Store Linux">
         <span>