add qhull/7.3.2

[SpaceIm]

Specify library name and version: qhull/7.3.2

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• I've followed the PEP8 style guides for Python code in the recipes.
• I've used the latest Conan client version.
• I've tried at least one configuration locally with the
  conan-center hook activated.

closes #1725

[conan-center-bot]

Some configurations of 'qhull/7.3.2' failed in build 1 (e09eda0822a401d4629538ce149b5e683013971a):

• Linux x86_64, Release, gcc 5, libstdc++ . Options: qhull:shared-True
  • Hooks errors detected:
    • [HOOK - conan-center.py] post_package(): ERROR: [DEFAULT PACKAGE LAYOUT (KB-H013)] Unknown folder 'share' in the package (https://github.com/conan-io/conan-center-index/wiki/Error-Knowledge-Base#KB-H013)
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[conan-center-bot]

All green in build 2 (ad07344b64327e0b9850fb41980630ec3b637d30)! 😊

• qhull/7.3.2: Generated 82 packages. All logs here

[SpaceIm]

I've patched CMakeLists to only install non reentrant version of qhull. It's the one used by gdal AFAIK.

Basically, qhull has:

• a non reentrant version (C API)
• a reentrant version (another lib and another similar C API than non-reentrant version)
• a C++ version, incomplete, always static, which always needs the static reentrant version

It was easier to just remove reentrant and C++ libs, because consumers can't have both reentrant and non-reentrant version linked (duplicated symbols), and reentrant lib is really another lib: different namespaced header files.