Allow to build with the PyPI package "clang" instead of "libclang". 1. It seems to be maintained. 2. In the FreeBSD base system there is no pre-built libclang.so. If you need this library you have to install llvm from ports additionally. 2. On FreeBSD there is no pre-built wheel "libclang" with a packaged libclang.so.

Long: head
Short: I
Help: Show document info only
Protocols: HTTP FTP FILE
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Fetch the headers only! HTTP-servers feature the command HEAD which this uses
to get nothing but the header of a document. When used on an FTP or FILE file,
curl displays the file size and last modification time only.