CMAKE_CURRENT_LIST_DIR reflect current directory. Thus It can be lowercase drive letter.
The lowercase drive letter cause #8237 issue.
Fixup drive letter to uppercase by using get_filename_component().
* - Added scripts variable to ports file.
- Added check if triplet file is not available (NPE).
* - Fixed line endings.
* Provide location of .vcpkg-root to ports.cmake
* vcpkg sets VCPKG_ROOT_PATH in ports.cmake
* [vcpkg] Fail if VCPKG_ROOT_PATH is not passed from vcpkg.exe
* [vcpkg] Fix vcpkg rooth path
* [vcpkg] Make --x-scripts-root an experimental command
* checkpoint commit
* Only set VCPKG_ENV_OVERRIDES_FILE if it exists
* First pass at working port-toolchain
* Update VERSION.txt
* Return rvalue
* Fix compilation error
* Some fixes are requested by @ubsan
* Fix another compilation error
* Introduce an easier way to identify target systems...
* fix missing ()
* move the include around.
also added vcpkg_common_functions to be automatically included
* remove warning message
* added remaining VCPKG_CMAKE_SYSTEM_NAMEs found only in vcpkg_configure_cmake to load a toolchain.
* remove warning again from messed up merge
