Rollup merge of #77558 - thomcc:defaults-toml-extension, r=jyn514

Rename bootstrap/defaults/{config.toml.PROFILE => config.PROFILE.toml}

This allows these files to have okay syntax highlighting in editors, and helps avoid nagging from editors which want to suggest that I install a plugin for `*.library` files to view the `config.toml.library` or whatever.

It's a very minor change.

r?@jyn514

src/bootstrap/CHANGELOG.md

@@ -7,6 +7,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ## [Non-breaking changes since the last major version]
 
 - `x.py check` needs opt-in to check tests (--all-targets) [#77473](https://github.com/rust-lang/rust/pull/77473)
+- The default bootstrap profiles are now located at `bootstrap/defaults/config.$PROFILE.toml` (previously they were located at `bootstrap/defaults/config.toml.$PROFILE`) [#77558](https://github.com/rust-lang/rust/pull/77558)
+
 
 ## [Version 2] - 2020-09-25
 

src/bootstrap/config.rs

@@ -574,7 +574,7 @@ impl Config {
             include_path.push("src");
             include_path.push("bootstrap");
             include_path.push("defaults");
-            include_path.push(format!("config.toml.{}", include));
+            include_path.push(format!("config.{}.toml", include));
             let included_toml = get_toml(&include_path);
             toml.merge(included_toml);
         }

src/bootstrap/setup.rs

@@ -20,7 +20,7 @@ pub fn setup(src_path: &Path, include_name: &str) {
             file.display()
         );
         println!(
-            "note: this will use the configuration in {}/src/bootstrap/defaults/config.toml.{}",
+            "note: this will use the configuration in {}/src/bootstrap/defaults/config.{}.toml",
             src_path.display(),
             include_name
         );
@@ -36,7 +36,7 @@ pub fn setup(src_path: &Path, include_name: &str) {
     t!(fs::write(path, settings));
 
     let include_path =
-        format!("{}/src/bootstrap/defaults/config.toml.{}", src_path.display(), include_name);
+        format!("{}/src/bootstrap/defaults/config.{}.toml", src_path.display(), include_name);
     println!("`x.py` will now use the configuration at {}", include_path);
 
     let suggestions = match include_name {