update Cargo.lock and miri URL

Author: RalfJung

.gitmodules

@@ -24,7 +24,7 @@
 	url = https://github.com/rust-lang-nursery/rustfmt.git
 [submodule "src/tools/miri"]
 	path = src/tools/miri
-	url = https://github.com/solson/miri.git
+	url = https://github.com/rust-lang/miri.git
 [submodule "src/doc/rust-by-example"]
 	path = src/doc/rust-by-example
 	url = https://github.com/rust-lang/rust-by-example.git
@@ -46,4 +46,4 @@
 	branch = rustc/8.0-2019-01-16
 [submodule "src/doc/embedded-book"]
 	path = src/doc/embedded-book
-	url = https://github.com/rust-embedded/book.git
+	url = https://github.com/rust-embedded/book.git

Cargo.lock

@@ -1626,6 +1626,7 @@ dependencies = [
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-workspace-hack 1.0.0",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "shell-escape 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "vergen 3.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]