Add dlib 19.10

[xsacha]

• I've tested this package remotely and have excluded all broken builds.
  Here is the links to the Travis/AppVeyor with status "All passed":

  • https://ci.appveyor.com/project/xsacha/hunter-h4uji
  • https://travis-ci.org/xsacha/hunter/builds/357186104

[ruslo]

Testing:

• https://ci.appveyor.com/project/ingenue/hunter/build/1.0.3499
• https://travis-ci.org/ingenue/hunter/builds/357273181?utm_source=github_status&utm_medium=notification

[ruslo]

Uploading:

• https://ci.appveyor.com/project/ingenue/hunter/build/1.0.3501
• https://travis-ci.org/ingenue/hunter/builds/357287078?utm_source=github_status&utm_medium=notification

[ruslo]

Released: https://github.com/ruslo/hunter/releases/tag/v0.20.25

[xsacha]

Strange, I now try to use this in my project and get an error:
Unknown CMake command "check_required_components".

[ruslo]

configure_file(cmake_utils/dlibConfig.cmake.in "${CMAKE_CURRENT_BINARY_DIR}/config/dlibConfig.cmake" @ONLY)

@xsacha Should be configure_package_config_file , not just configure_file. I think that current testing use all dependencies and check_required_components loaded from one of the find_package calls from Config.cmake.in. I guess you have minimal configuration without dependencies.

[xsacha]

That's true, we configure without any dependencies but I didn't have any issues on 19.8.
It's very confusing because dlib previously didn't have a configure/install and has just added it in 19.10.
I tried to keep as much the same from upstream as possible but enough from Hunter so it works fine with Hunter.

[ruslo]

I tried to keep as much the same from upstream as possible but enough from Hunter so it works fine with Hunter.

This change is not Hunter related, it's worth adding it upstream as general improvement.