pcl: add v1.14.0, use llvm-openmp for OpenMP

[valgur]

I scanned the diff against previous version and there were no changes to the list of components or their dependencies, either internal or external ones.

[AbrilRBS]

Could we split the PR into the new version stuff, and the llvm-openmp one until we figure that one out?

[conan-center-bot]

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All green in build 23 (0ac9bdb3c3e4a0e9b5ca13c8e7e03f737838d1d2):

• pcl/1.14.1:
  Built 20 packages out of 22 (All logs)

• pcl/1.13.1:
  Built 20 packages out of 22 (All logs)

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All green in build 23 (0ac9bdb3c3e4a0e9b5ca13c8e7e03f737838d1d2):

• pcl/1.14.1:
  Built 9 packages out of 10 (All logs)

• pcl/1.13.1:
  Built 9 packages out of 10 (All logs)

[valgur]

@AbrilRBS Ok, I reverted most of the OpenMP-related changes. I only kept the use of more correct and robust OpenMP linker and cxx flags instead of adding it as a system lib (the name of which is not fixed on MSVC, for example).

[shkwon98]

@valgur Hi, as a PCL user, thank you for your efforts in supporting conan.
Currently, 1.13.1, the only PCL version officially supported by conan, has a problem with Boost dependencies when building the pcl_gpu_containers target. This issue appears to have been resolved in 1.14.0-rc1, so support in conan is needed.

Looking at the above history, it seems that the check failed in the Pre-Checks step because of using the pre-release version of qhull. Is there a particular reason why you did not use version 8.0.1?

[valgur]

The libqhull PR #24532 should be merged first. PCL links against the re-entrant libqhull_r library, but the libqhull recipe does not correctly distinguish between the reentrant and non-reentrant variants in package_info() currently.

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