Tracking issue for MCP 1029: Stop using dlltool for generating import libraries on MinGW

This is a tracking issue for MCP "Stop using dlltool for generating import libraries on MinGW" (rust-lang/compiler-team#1029).

[!NOTE]
Tracking issues are used to record the overall progress of implementation.
They are also used as hubs connecting to other relevant issues, e.g., bugs or open design questions.

A tracking issue is however not meant for large scale discussion, questions, or bug reports.
Instead, open a dedicated issue for the specific matter, link to this tracking issue and ping the MCP author.
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Steps

• Implement the MCP
• Adjust the documentation
  • In the Rust Compiler Development Guide if applicable (e.g., for refactorings)
  • In the Rust Forge if applicable (e.g., for policy changes)
  • In the rustc book if applicable (e.g., for target tier or CLI changes)
  • In the Unstable Book if applicable (e.g., for unstable CLI changes)

Unresolved questions

None so far.

Implementation history

• https://github.com/rust-lang/rust/pull/161050
• https://github.com/rust-lang/rust/pull/157712

@bjorn3, consider @rustbot claim'ing the work.

Start by reading MCP rust-lang/compiler-team#1029 and the implementation history links, rust-lang/rust#161050 and #157712. The tracking issue does not name source files or tests. Done means implementing the MCP and adjusting the applicable Rust Compiler Development Guide, Rust Forge, rustc book, or Unstable Book documentation.