[llvm] [llvm-config] Add new flag `--quote-paths` to optionally quote and escape paths (PR #103397)

[Ambrus Tóth via llvm-commits]

tothambrus11 wrote:

Hi, thanks for the work, looks great!

As a food for thought regarding `\`-es: my go-to practice with paths on windows was to replace all `\` characters in paths with `/`. It's so much less hassle, and it works perfectly with all tools I've tried. Unfortunately, not all external tools may take this into account, but regular Windows functionality should work. So probably escaping is the more robust choice in general. https://retrocomputing.stackexchange.com/a/28348

For us at Hylo, it works great, see my script for generating a pkg-config file for LLVM: https://github.com/hylo-lang/get-llvm/blob/main/src/get-llvm.ts#L305

https://github.com/llvm/llvm-project/pull/103397