debuginfo: Add a rust-gdb shell script that will start GDB with Rust pretty printers enabled.
diff --git a/src/test/debuginfo/struct-in-enum.rs b/src/test/debuginfo/struct-in-enum.rs
index 68281cb..6f801a7 100644
--- a/src/test/debuginfo/struct-in-enum.rs
+++ b/src/test/debuginfo/struct-in-enum.rs
@@ -42,6 +42,7 @@
 // lldb-check:[...]$2 = TheOnlyCase(Struct { x: 123, y: 456, z: 789 })
 
 #![allow(unused_variables)]
+#![omit_gdb_pretty_printer_section]
 
 use self::Regular::{Case1, Case2};
 use self::Univariant::TheOnlyCase;