ed2e18398b3ab657e98e3e1fe135cbf8dd94fda3 Remove fs::relative call and fix listwalletdir tests (João Barbosa)
Pull request description:
The implementation of `fs::relative` resolves symlinks which is not intended
in ListWalletDir. The replacement does what is required, and `listwalletdir` RPC
tests are fixed accordingly.
Also, `fs::recursive_directory_iterator` iteration is fixed to build with boost 1.47.
Based on #14559
Tree-SHA512: 1da516226073f195285d10d9d9648c90cce0158c5d1eb9c31217bb4abb575cd37f07c00787c5a850554d6120bbc5a3cbc5cb47d4488b32ac6bcb52bc1882d600
Backport of Core PR14559
Depends on D5546