…gillot

Suggest Replacing Comma with Semicolon in Incorrect Repeat Expressions

Fixes rust-lang#80173

This PR detects typos in repeat expressions like `["_", 10]` and `vec![String::new(), 10]` and suggests replacing comma with semicolon.

Also, improves code in other place by adding doc comments and making use of a helper function to check if a type implements `Clone`.

References:
1. For `vec![T; N]`: https://doc.rust-lang.org/std/macro.vec.html
2. For `[T; N]`: https://doc.rust-lang.org/std/primitive.array.html

…iaskrgr

Rollup of 6 pull requests

Successful merges:

 - rust-lang#128110 (Suggest Replacing Comma with Semicolon in Incorrect Repeat Expressions)
 - rust-lang#134609 (Add new `{x86_64,i686}-win7-windows-gnu` targets)
 - rust-lang#134875 (Implement `const Destruct` in old solver)
 - rust-lang#135221 (Include rustc and rustdoc book in replace-version-placeholder)
 - rust-lang#135231 (bootstrap: Add more comments to some of the test steps)
 - rust-lang#135256 (Move `mod cargo`  below the import statements)

Failed merges:

 - rust-lang#135195 (Make `lit_to_mir_constant` and `lit_to_const` infallible)

r? `@ghost`
`@rustbot` modify labels: rollup

Rollup merge of rust-lang#128110 - veera-sivarajan:bugfix-80173, r=cjgillot

Suggest Replacing Comma with Semicolon in Incorrect Repeat Expressions

Fixes rust-lang#80173

This PR detects typos in repeat expressions like `["_", 10]` and `vec![String::new(), 10]` and suggests replacing comma with semicolon.

Also, improves code in other place by adding doc comments and making use of a helper function to check if a type implements `Clone`.

References:
1. For `vec![T; N]`: https://doc.rust-lang.org/std/macro.vec.html
2. For `[T; N]`: https://doc.rust-lang.org/std/primitive.array.html