Add crate_name to test so that it can be renamed

Author: notriddle

tests/rustdoc/issue-21092.rs

@@ -1,6 +1,8 @@
 // aux-build:issue-21092.rs
 // ignore-cross-compile
 
+#![crate_name="issue_21092"]
+
 extern crate issue_21092;
 
 // @has issue_21092/struct.Bar.html

tests/rustdoc/issue-21474.rs

@@ -1,3 +1,5 @@
+#![crate_name="issue_21474"]
+
 pub use inner::*;
 
 mod inner {

tests/rustdoc/issue-21801.rs

@@ -1,6 +1,8 @@
 // aux-build:issue-21801.rs
 // ignore-cross-compile
 
+#![crate_name="issue_21801"]
+
 extern crate issue_21801;
 
 // @has issue_21801/struct.Foo.html

tests/rustdoc/issue-22025.rs

@@ -1,6 +1,8 @@
 // aux-build:issue-22025.rs
 // ignore-cross-compile
 
+#![crate_name="issue_22025"]
+
 extern crate issue_22025;
 
 pub use issue_22025::foo::{Foo, Bar};

tests/rustdoc/issue-22038.rs

@@ -1,3 +1,5 @@
+#![crate_name="issue_22038"]
+
 extern "C" {
     // @has issue_22038/fn.foo1.html \
     //      '//pre[@class="rust item-decl"]' 'pub unsafe extern "C" fn foo1()'

tests/rustdoc/issue-23106.rs

@@ -1,5 +1,7 @@
 // compile-flags:--test
 
+#![crate_name="issue_23106"]
+
 /// ```
 /// #
 /// ```

tests/rustdoc/issue-23207.rs

@@ -2,6 +2,8 @@
 // aux-build:issue-23207-2.rs
 // ignore-cross-compile
 
+#![crate_name="issue_23207"]
+
 extern crate issue_23207_2;
 
 // @has issue_23207/fmt/index.html

tests/rustdoc/issue-23511.rs

@@ -2,6 +2,8 @@
 #![feature(rustdoc_internals)]
 #![no_std]
 
+#![crate_name="issue_23511"]
+
 pub mod str {
     #![rustc_doc_primitive = "str"]
 

tests/rustdoc/issue-23744.rs

@@ -1,5 +1,7 @@
 // compile-flags:--test
 
+#![crate_name="issue_23744"]
+
 /// Example of rustdoc incorrectly parsing <code>```rust,should_panic</code>.
 ///
 /// ```should_panic

tests/rustdoc/issue-23812.rs

@@ -1,3 +1,5 @@
+#![crate_name="issue_23812"]
+
 macro_rules! doc {
     (#[$outer:meta] mod $i:ident { #![$inner:meta] }) =>
     (