Don't invent new magic keywords

Author: oli-obk

src/librustc/lint/builtin.rs

@@ -78,7 +78,7 @@ declare_lint! {
     pub UNREACHABLE_CODE,
     Warn,
     "detects unreachable code paths",
-    report_in_external_macro
+    report_in_external_macro: true
 }
 
 declare_lint! {
@@ -218,7 +218,7 @@ declare_lint! {
     pub DEPRECATED,
     Warn,
     "detects use of deprecated items",
-    report_in_external_macro
+    report_in_external_macro: true
 }
 
 declare_lint! {

src/librustc/lint/mod.rs

@@ -105,8 +105,8 @@ macro_rules! declare_lint {
     ($vis: vis $NAME: ident, $Level: ident, $desc: expr) => (
         declare_lint!{$vis $NAME, $Level, $desc, false}
     );
-    ($vis: vis $NAME: ident, $Level: ident, $desc: expr, report_in_external_macro) => (
-        declare_lint!{$vis $NAME, $Level, $desc, true}
+    ($vis: vis $NAME: ident, $Level: ident, $desc: expr, report_in_external_macro: $rep: expr) => (
+        declare_lint!{$vis $NAME, $Level, $desc, $rep}
     );
     ($vis: vis $NAME: ident, $Level: ident, $desc: expr, $external: expr) => (
         $vis static $NAME: &$crate::lint::Lint = &$crate::lint::Lint {