Autoconf Archive Conan 2.0 compatibility

[System-Arch]

Specify library name and version: autoconf-archive/2021.02.19

Didn't find existing effort to port this to Conan 2.0, so did so in support of building MPFR from Git source.

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• I've read the contributing guidelines.
• I've used a recent Conan client version close to the currently deployed.
• I've tried at least one configuration locally with the conan-center hook activated.

[conan-center-bot]

Conan v1 pipeline ✔️

All green in build 14 (daafa72462dfd7cc12e9b94b78b7787d4cfcc9ac):

• autoconf-archive/2021.02.19@:
  All packages built successfully! (All logs)

• autoconf-archive/2022.09.03@:
  All packages built successfully! (All logs)

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Conan v2 pipeline (informative, not required for merge) ❌

Note: Conan v2 builds are informative and they are not required for the PR to be merged.

The v2 pipeline failed. Please, review the errors and note this will be required for pull requests to be merged in the near future.

See details:

Failure in build 14 (daafa72462dfd7cc12e9b94b78b7787d4cfcc9ac):

• autoconf-archive/2021.02.19@:
  Didn't run or was cancelled before finishing

• autoconf-archive/2022.09.03@:
  CI failed to create some packages (All logs)

  Logs for packageID da39a3ee5e6b4b0d3255bfef95601890afd80709:

  [settings]
  arch=x86_64
  build_type=Release
  compiler=gcc
  compiler.libcxx=libstdc++11
  compiler.version=11
  os=Linux
  

  [...]
  Downloading conanmanifest.txt
  Downloading conanfile.py
  Downloading conan_export.tgz
  Decompressing conan_export.tgz
  autoconf/2.71: Downloaded recipe revision 053e3879948e44d44a511554854ffbe9
  m4/1.4.19: Not found in local cache, looking in remotes...
  m4/1.4.19: Checking remote: conan-center-v2
  m4/1.4.19: Trying with 'conan-center-v2'...
  Downloading conanmanifest.txt
  Downloading conanfile.py
  Downloading conan_export.tgz
  Decompressing conan_export.tgz
  m4/1.4.19: Downloaded recipe revision 7689d2cae05587d0efb12261ddc4124d
  automake/1.16.5: Not found in local cache, looking in remotes...
  automake/1.16.5: Checking remote: conan-center-v2
  automake/1.16.5: Trying with 'conan-center-v2'...
  Downloading conanfile.py
  Downloading conanmanifest.txt
  Downloading conan_export.tgz
  Decompressing conan_export.tgz
  automake/1.16.5: Downloaded recipe revision 891f585a736bce951cc0e7109aa5ffee
  Graph root
      autoconf-archive/2022.09.03 (test package): /home/conan/w/prod-v2/BuildSingleReference/conan-center-index/recipes/autoconf-archive/all/test_package/conanfile.py
  Build requirements
      autoconf/2.71#053e3879948e44d44a511554854ffbe9 - Cache
      autoconf-archive/2022.09.03#cee333d71789b28accb76c31d5457bae - Cache
      automake/1.16.5#891f585a736bce951cc0e7109aa5ffee - Downloaded (conan-center-v2)
      m4/1.4.19#7689d2cae05587d0efb12261ddc4124d - Cache
  
  -------- test_package: Computing necessary packages --------
  
  -------- Computing necessary packages --------
  Build requirements
      autoconf-archive/2022.09.03#cee333d71789b28accb76c31d5457bae:da39a3ee5e6b4b0d3255bfef95601890afd80709 - Missing
      autoconf/2.71#053e3879948e44d44a511554854ffbe9:da39a3ee5e6b4b0d3255bfef95601890afd80709#b1d8ba7f536ba0dbb6c55c5ed249f4db - Skip (conan-center-v2)
      automake/1.16.5#891f585a736bce951cc0e7109aa5ffee:9a4eb3c8701508aa9458b1a73d0633783ecc2270#9719e51a6a62041af6a63e00eef35434 - Download (conan-center-v2)
      m4/1.4.19#7689d2cae05587d0efb12261ddc4124d:3593751651824fb813502c69c971267624ced41a#c69dc2230d016a77b5514d9916b14714 - Skip (conan-center-v2)
  
  -------- test_package: Installing packages --------
  
  -------- Installing (downloading, building) binaries... --------
  ERROR: Missing binary: autoconf-archive/2022.09.03:da39a3ee5e6b4b0d3255bfef95601890afd80709
  
  autoconf-archive/2022.09.03: WARN: Can't find a 'autoconf-archive/2022.09.03' package binary 'da39a3ee5e6b4b0d3255bfef95601890afd80709' for the configuration:
  
  ERROR: Missing prebuilt package for 'autoconf-archive/2022.09.03'
  Use 'conan list packages autoconf-archive/2022.09.03 --format=html -r=remote > table.html' and open the table.html file to see available packages
  Or try to build locally from sources with '--build=autoconf-archive/2022.09.03'
  
  More Info at 'https://docs.conan.io/en/latest/faq/troubleshooting.html#error-missing-prebuilt-package'
  

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