[LLGL] port installs header (include) files in <vcpkg-root>\installed\<triplet>\include\include\LLGL

[ghost]

Describe the bug
LLGL port installs header (include) files in <vcpkg-root>\installed\<triplet>\include\include\LLGL

Environment

• OS: [Microsoft Windows [Version 10.0.19041.331]]
• Compiler: Visual Studio 2019 Version: 16.6.3 VS Tools Version: 14.26.28801

To Reproduce
Steps to reproduce the behavior:

1. ./vcpkg install llgl[core,direct3d11,opengl]:x64-windows
2. No error but ... see the Describe the bug section above.

Expected behavior
I believe the header (include) files should be installed in <vcpkg-root>\installed\<triplet>\include\LLGL - in other words, there is one too many include in the destination path.

Failure logs
No Failure logs.
Additional context
Add any other context about the problem here.
Depending on which is installed first, gmp or llgl, the first installs, and the second has a failed rename result - see issue #12237. In my case, I always install port llgl first and then gmp second, hence I get a fail gmp install.

SYSTEM@ANDROMEDA 07/02/2020 22:25:10 D:\Git\vs2019.prod\installed\x64-windows\include\include
->dir
Volume in drive D is Dev_01
Volume Serial Number is E857-FDB0

Directory of D:\Git\vs2019.prod\installed\x64-windows\include\include

07/02/2020 22:18 <DIR> BUILTIN\Administrators .
07/02/2020 22:18 <DIR> BUILTIN\Administrators ..
07/02/2020 22:18 <DIR> BUILTIN\Administrators LLGL
0 File(s) 0 bytes
3 Dir(s) 713,928,261,632 bytes free

[ghost]

I close, I no longer use product.