Auto merge of #145844 - Zalathar:rollup-4kdll9t, r=Zalathar

Rollup of 10 pull requests

Successful merges:

 - rust-lang/rust#135761 (Dial down detail of B-tree description)
 - rust-lang/rust#145620 (Account for impossible bounds making seemingly unsatisfyable dyn-to-dyn casts)
 - rust-lang/rust#145788 (Fix attribute target checking for macro calls)
 - rust-lang/rust#145794 (bootstrap.py: Improve CPU detection on NetBSD)
 - rust-lang/rust#145817 (cg_llvm: Replace the `llvm::Bool` typedef with a proper newtype)
 - rust-lang/rust#145820 (raw-dylib-elf: set correct `DT_VERDEFNUM`)
 - rust-lang/rust#145828 (Update `bitflags` to 2.9.3.)
 - rust-lang/rust#145830 (Remove the lifetime from `ExpTokenPair`/`SeqSep`.)
 - rust-lang/rust#145836 (Remove outdated bug comments)
 - rust-lang/rust#145842 (rustc-dev-guide subtree update)

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

Author: bors

rust-version

@@ -1 +1 @@
-425a9c0a0e365c0b8c6cfd00c2ded83a73bed9a0
+a1dbb443527bd126452875eb5d5860c1d001d761

src/SUMMARY.md

@@ -103,6 +103,7 @@
 	- [The `rustdoc-json` test suite](./rustdoc-internals/rustdoc-json-test-suite.md)
 - [GPU offload internals](./offload/internals.md)
     - [Installation](./offload/installation.md)
+    - [Usage](./offload/usage.md)
 - [Autodiff internals](./autodiff/internals.md)
     - [Installation](./autodiff/installation.md)
     - [How to debug](./autodiff/debugging.md)

src/building/bootstrapping/what-bootstrapping-does.md

@@ -23,7 +23,7 @@ Note that this documentation mostly covers user-facing information. See
 
 ### Overview
 
-- Stage 0: the pre-compiled compiler
+- Stage 0: the pre-compiled compiler and standard library
 - Stage 1: from current code, by an earlier compiler
 - Stage 2: the truly current compiler
 - Stage 3: the same-result test
@@ -192,7 +192,7 @@ include, but are not limited to:
   artifacts'). If you're working on the standard library, this is normally the
   test command you want.
 - `./x build --stage 0` means to build with the stage0 `rustc`.
-- `./x doc --stage 0` means to document using the stage0 `rustdoc`.
+- `./x doc --stage 1` means to document using the stage0 `rustdoc`.
 
 #### Examples of what *not* to do
 
@@ -211,7 +211,7 @@ include, but are not limited to:
 In short, _stage 0 uses the `stage0` compiler to create `stage0` artifacts which
 will later be uplifted to be the stage1 compiler_.
 
-In each stage, two major steps are performed:
+In each stage besides 0, two major steps are performed:
 
 1. `std` is compiled by the stage N compiler.
 2. That `std` is linked to programs built by the stage N compiler, including the