Commits on Oct 2, 2020

1. treewide: fix redirected urls (run 3) …

   Related:
    - 9fc5e7e
    - 593e11f
    - 508ae42
   
   Since the last time I ran this script, the Repology API changed, so I had to
   adapt the script used in the previous PR. The new API should be more robust, so
   overall this is a positive (no more grepping the error messages for our relevant
   data but just a nice json structure).
   
   Here's the new script I used:
   
   ```sh
   curl https://repology.org/api/v1/repository/nix_unstable/problems \
      | jq -r '.[] | select(.type == "homepage_permanent_https_redirect") | .data | "s@\(.url)@\(.target)@"' \
      | sort | uniq | tee script.sed
   find -name '*.nix' | xargs -P4 -- sed -f script.sed -i
   ```
   
   I will also add this script to `maintainers/scripts`.

   

   Synthetica9 authored and Jon committed Oct 2, 2020
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2. maintainers/scripts: add update_redirected_urls to fix redirected url… …

   …s using Repology data

   

   Synthetica9 authored and Jon committed Oct 2, 2020
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3. treewide: remove some trailing whitespace to please ofborg

   

   Synthetica9 authored and Jon committed Oct 2, 2020
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4. pcsc-scm-scl: manually correct wrongly automatically changed url

   

   Synthetica9 authored and Jon committed Oct 2, 2020
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