c864a4c194 Simplify fs::path by dropping filename() and make_preferred() overloads (Ryan Ofsky)
b0113afd44 Fix windows libc++ fs::path fstream compile errors (Ryan Ofsky)
Pull request description:
Drop support for passing `fs::path` directly to `std::ifstream` and `std::ofstream` constructors and `open()` functions, because as reported by hebasto in https://github.com/bitcoin/bitcoin/issues/33545, after https://wg21.link/lwg3430 there is no way this can continue to work in windows builds, and there are already compile errors compiling for windows with newer versions of libc++.
Instead, add an `fs::path::std_path()` method that returns `std::filesystem::path` references and use it where needed.
ACKs for top commit:
hebasto:
ACK c864a4c194.
l0rinc:
Code review ACK c864a4c194
maflcko:
re-ACK c864a4c194 🌥
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3fee0754a2