The latest version of this document lives in the vcpkg repo.
Warns the user if their vcpkg installation path might be too long for the package they're installing.
vcpkg_buildpath_length_warning(<N>)vcpkg_buildpath_length_warning warns the user if the number of bytes in the
path to buildtrees is bigger than N. Note that this is simply a warning,
and isn't relied on for correctness.