Remove unnecessary external dependencies.

The main libcretonne crate should not have any external dependencies if
at all possible. Use simple substring matching instead of regular
expressions in the verifier tests to achieve this.

The tools crate no longer depends directly on glob and regex. It still
has an indirect dependency on regex through libfilecheck.

cranelift/src/tools/Cargo.lock

@@ -6,8 +6,6 @@ dependencies = [
  "cretonne-reader 0.0.0",
  "docopt 0.6.80 (registry+https://github.com/rust-lang/crates.io-index)",
  "filecheck 0.0.0",
- "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 0.1.71 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -22,9 +20,6 @@ dependencies = [
 [[package]]
 name = "cretonne"
 version = "0.0.0"
-dependencies = [
- "regex 0.1.71 (registry+https://github.com/rust-lang/crates.io-index)",
-]
 
 [[package]]
 name = "cretonne-reader"
@@ -50,11 +45,6 @@ dependencies = [
  "regex 0.1.71 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "glob"
-version = "0.2.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "kernel32-sys"
 version = "0.2.2"

cranelift/src/tools/Cargo.toml

@@ -15,5 +15,3 @@ cretonne-reader = { path = "../libreader" }
 filecheck = { path = "../libfilecheck" }
 docopt = "0.6.80"
 rustc-serialize = "0.3.19"
-regex = "0.1.71"
-glob = "0.2.11"