Auto merge of #14592 - asajeffrey:util-goodbye, r=mbrubeck

Remove the util crate

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This PR removes the `util` crate.

* Replaced the `spawn_named` and `clamp` functions by appropriate uses of `std:🧵:Builder::spawn`, `std::cmp::min` and `std::cmp::max`.
* Moved `opts`, `prefs` and `resource_files` into a new `config` crate.
* Moved `remutex` and `geometry` into their own crates.

---
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes do not require tests because they are refactorings

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components/bluetooth_traits/Cargo.toml

@@ -14,4 +14,4 @@ ipc-channel = "0.5"
 regex = "0.1.43"
 serde = "0.8"
 serde_derive = "0.8"
-util = {path = "../util"}
+servo_config = {path = "../config"}

components/bluetooth_traits/blocklist.rs

@@ -3,11 +3,11 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use regex::Regex;
+use servo_config::resource_files::read_resource_file;
 use std::cell::RefCell;
 use std::collections::HashMap;
 use std::io::BufRead;
 use std::string::String;
-use util::resource_files::read_resource_file;
 
 const BLOCKLIST_FILE: &'static str = "gatt_blocklist.txt";
 const BLOCKLIST_FILE_NOT_FOUND: &'static str = "Could not find gatt_blocklist.txt file";

components/bluetooth_traits/lib.rs

@@ -8,7 +8,7 @@ extern crate ipc_channel;
 extern crate regex;
 #[macro_use]
 extern crate serde_derive;
-extern crate util;
+extern crate servo_config;
 
 pub mod blocklist;
 pub mod scanfilter;