Rollup of 9 pull requests

[Manishearth]

Successful merges:

• Improve compiler error message for wrong generic parameter order #72271 (Improve compiler error message for wrong generic parameter order)
• move leak-check to during coherence, candidate eval #72493 ( move leak-check to during coherence, candidate eval)
• A way forward for pointer equality in const eval #73398 (A way forward for pointer equality in const eval)
• Clean up E0689 explanation #73472 (Clean up E0689 explanation)
• Account for multiple impl/dyn Trait in return type when suggesting '_ #73496 (Account for multiple impl/dyn Trait in return type when suggesting '_)
• Add second message for LiveDrop errors #73515 (Add second message for LiveDrop errors)
• Clarify --extern documentation. #73567 (Clarify --extern documentation.)
• Fix typos in doc comments #73572 (Fix typos in doc comments)
• bootstrap: no config.toml exists regression #73590 (bootstrap: no config.toml exists regression)

Failed merges:

r? @ghost