Auto merge of #45104 - vitiral:incr_auto_assert2, r=michaelwoerister

Incremental compilation auto assert (with except)

cc @michaelwoerister

bors merged part 1, so this is a WIP of part 2 of #45009  -- auto asserting DepNodes depending on the type of node rustc_clean/dirty is attached to

Framework:
- [x] finish auto-detection for specified DepNodes
- [x] finish auto-detection for remaining DepNodes

Test Refactors:
- [x] consts.rs
- [x] enum_constructors.rs
- [x] extern_mods.rs
- [x] inherent_impls.rs
- [x] statics.rs
- [x] struct_constructors.rs
- ~~**BLOCKED** trait_defs.rs, see FIXME~~
- ~~**BLOCKED** trait_impls.rs~~
- [x] type_defs.rs
- [x] enum_defs.rs

Author: bors

src/librustc/dep_graph/mod.rs

@@ -19,7 +19,7 @@ mod safe;
 mod serialized;
 
 pub use self::dep_tracking_map::{DepTrackingMap, DepTrackingMapConfig};
-pub use self::dep_node::{DepNode, DepKind, DepConstructor, WorkProductId};
+pub use self::dep_node::{DepNode, DepKind, DepConstructor, WorkProductId, label_strs};
 pub use self::graph::{DepGraph, WorkProduct, DepNodeIndex, DepNodeColor};
 pub use self::prev::PreviousDepGraph;
 pub use self::query::DepGraphQuery;