pkgconf: update to support Conan 2.0

[jcar87]

Specify library name and version: pkgconf/all

Summary of changes

• Use newer integrations to build (Meson and Mesontoolchain)
• General update to use tools compatible with Conan 2.0
• Update meson build time requirement to Meson 1.0.0
• Remove _sharedstatedir internal property - tested against all supported versions of the recipe and seems to make no difference in the packaged artifacts
• vcvars istantiation is no longer needed as it is now implicitly done by Meson/MesonToolchain

The test package is slightly refactored for v2:

• Test integration of finding libexample1.pc directly during the same step that executes autoreconf+configure on a small autotools project
• Use cmake target generated by CMake deps, rather than legacy integration

[ghost]

I detected other pull requests that are modifying pkgconf/all recipe:

• pkgconf: conan v2 support & allow cross-build in the meantime #12219

This message is automatically generated by https://github.com/ericLemanissier/conan-center-conflicting-prs so don't hesitate to report issues/improvements there.

[conan-center-bot]

Conan v1 pipeline ✔️

All green in build 4 (f0d3f18cc2c770fa970d8169bcf7b3af17eb7282):

• pkgconf/1.7.4@:
  All packages built successfully! (All logs)

• pkgconf/1.9.3@:
  All packages built successfully! (All logs)

• pkgconf/1.7.3@:
  All packages built successfully! (All logs)

---

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 4 (f0d3f18cc2c770fa970d8169bcf7b3af17eb7282):

• pkgconf/1.9.3@:
  Didn't run or was cancelled before finishing

• pkgconf/1.7.4@:
  Didn't run or was cancelled before finishing

• pkgconf/1.7.3@:
  CI failed to create some packages (All logs)

  Logs for packageID 8b5cf1367c351fd3c60ef4e28c1a50612761b13e:

  [settings]
  arch=x86_64
  build_type=Release
  compiler=apple-clang
  compiler.libcxx=libc++
  compiler.version=13
  os=Macos
  [options]
  */*:shared=False
  

  [...]
  
  -------- Computing dependency graph --------
  meson/1.0.0: Not found in local cache, looking in remotes...
  meson/1.0.0: Checking remote: conan-center-v2
  meson/1.0.0: Trying with 'conan-center-v2'...
  Downloading conanfile.py
  Downloading conan_export.tgz
  Downloading conanmanifest.txt
  Decompressing conan_export.tgz
  meson/1.0.0: Downloaded recipe revision 15586c0ac6f682805875ef903dbe7ee2
  ninja/1.11.1: Not found in local cache, looking in remotes...
  ninja/1.11.1: Checking remote: conan-center-v2
  ninja/1.11.1: Trying with 'conan-center-v2'...
  Downloading conanmanifest.txt
  Downloading conanfile.py
  Downloading conan_export.tgz
  Decompressing conan_export.tgz
  ninja/1.11.1: Downloaded recipe revision a2f0b832705907016f336839f96963f8
  Graph root
      virtual
  Requirements
      pkgconf/1.7.3#f592096d71575558ab456ce6af9db7ac - Cache
  Build requirements
      meson/1.0.0#15586c0ac6f682805875ef903dbe7ee2 - Downloaded (conan-center-v2)
      ninja/1.11.1#a2f0b832705907016f336839f96963f8 - Downloaded (conan-center-v2)
  
  -------- Computing necessary packages --------
  pkgconf/1.7.3: Forced build from source
  Requirements
      pkgconf/1.7.3#f592096d71575558ab456ce6af9db7ac:8b5cf1367c351fd3c60ef4e28c1a50612761b13e - Build
  Build requirements
      meson/1.0.0#15586c0ac6f682805875ef903dbe7ee2:da39a3ee5e6b4b0d3255bfef95601890afd80709#5c8fd51fc33f12e26519674d99afd0e5 - Download (conan-center-v2)
      ninja/1.11.1#a2f0b832705907016f336839f96963f8:9ac8640923e5284645f8852ef8ba335654f4020e - Missing
  
  -------- Installing packages --------
  
  -------- Installing (downloading, building) binaries... --------
  ERROR: Missing binary: ninja/1.11.1:9ac8640923e5284645f8852ef8ba335654f4020e
  
  ninja/1.11.1: WARN: Can't find a 'ninja/1.11.1' package binary '9ac8640923e5284645f8852ef8ba335654f4020e' for the configuration:
  [settings]
  arch=x86_64
  build_type=Release
  os=Macos
  
  ERROR: Missing prebuilt package for 'ninja/1.11.1'
  Use 'conan list packages ninja/1.11.1 --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=ninja/1.11.1'
  
  More Info at 'https://docs.conan.io/en/latest/faq/troubleshooting.html#error-missing-prebuilt-package'
  

---

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[franramirez688]

LGTM! Great job 👏

[SpaceIm]

But cross-build should be ok with the migration to MesonToolchain.