Rollup merge of #90782 - ricobbe:binutils-dlltool, r=michaelwoerister

Implement raw-dylib support for windows-gnu

Add support for `#[link(kind = "raw-dylib")]` on windows-gnu targets.  Work around binutils's linker's inability to read import libraries produced by LLVM by calling out to the binutils `dlltool` utility to create an import library from a temporary .DEF file; this approach is effectively a slightly refined version of `@mati865's` earlier attempt at this strategy in PR #88801.  (In particular, this attempt at this strategy adds support for `#[link_ordinal(...)]` as well.)

In support of #58713.

compiler/rustc_metadata/src/native_libs.rs

@@ -274,11 +274,6 @@ impl Collector<'_> {
                     span,
                     "`#[link(...)]` with `kind = \"raw-dylib\"` only supported on Windows",
                 );
-            } else if !self.tcx.sess.target.options.is_like_msvc {
-                self.tcx.sess.span_warn(
-                    span,
-                    "`#[link(...)]` with `kind = \"raw-dylib\"` not supported on windows-gnu",
-                );
             }
 
             if lib_name.as_str().contains('\0') {