Tests for dynamic regexes will now run during 'check-stage2'.

Before, tests for dynamic regexes ran during stage1 and tests for
native regexes ran during stage2. But the buildbots don't test stage1,
so now both dynamic and native tests are run during stage2.

Closes #13740.

Author: BurntSushi

src/libregex/test/mod.rs

@@ -12,9 +12,17 @@
 #[phase(syntax)]
 extern crate regex_macros;
 
-// Dirty hack: During stage1, test dynamic regexs. For stage2, we test
-// native regexs.
-#[cfg(stage1)]
+#[cfg(not(stage1))]
+#[path = "bench.rs"]
+mod native_bench;
+
+#[cfg(not(stage1))]
+#[path = "tests.rs"]
+mod native_tests;
+
+// Due to macro scoping rules, this definition only applies for the modules
+// defined below. Effectively, it allows us to use the same tests for both
+// native and dynamic regexes.
 macro_rules! regex(
     ($re:expr) => (
         match ::regex::Regex::new($re) {
@@ -24,6 +32,8 @@ macro_rules! regex(
     );
 )
 
-mod bench;
-mod tests;
+#[path = "bench.rs"]
+mod dynamic_bench;
+#[path = "tests.rs"]
+mod dynamic_tests;