Re-export more `rustc_span::symbol` things from `rustc_span`.

`rustc_span::symbol` defines some things that are re-exported from
`rustc_span`, such as `Symbol` and `sym`. But it doesn't re-export some
closely related things such as `Ident` and `kw`. So you can do `use
rustc_span::{Symbol, sym}` but you have to do `use
rustc_span::symbol::{Ident, kw}`, which is inconsistent for no good
reason.

This commit re-exports `Ident`, `kw`, and `MacroRulesNormalizedIdent`,
and changes many `rustc_span::symbol::` qualifiers in `compiler/` to
`rustc_span::`. This is a 200+ net line of code reduction, mostly
because many files with two `use rustc_span` items can be reduced to
one.

1 files changed, 1 insertions, 1 deletions

diff --git a/compiler/rustc_middle/src/dep_graph/dep_node.rs b/compiler/rustc_middle/src/dep_graph/dep_node.rs
index 87bbeb178ee..fcfc31575f8 100644
--- a/compiler/rustc_middle/src/dep_graph/dep_node.rs
+++ b/compiler/rustc_middle/src/dep_graph/dep_node.rs
@@ -64,7 +64,7 @@ pub use rustc_query_system::dep_graph::DepNode;
 use rustc_query_system::dep_graph::FingerprintStyle;
 pub use rustc_query_system::dep_graph::dep_node::DepKind;
 pub(crate) use rustc_query_system::dep_graph::{DepContext, DepNodeParams};
-use rustc_span::symbol::Symbol;
+use rustc_span::Symbol;
 
 use crate::mir::mono::MonoItem;
 use crate::ty::TyCtxt;