Auto merge of rust-lang#116269 - Veykril:rustc-abi, r=WaffleLapkin

Bring back generic parameters for indices in rustc_abi and make it compile on stable

This effectively reverses rust-lang#107163, allowing rust-analyzer to depend on this crate again,

It also moves some glob imports / expands them in the first commit because they made it more difficult for me to reason about things.

Author: bors

Cargo.lock

@@ -4473,6 +4473,7 @@ dependencies = [
  "rustc_data_structures",
  "rustc_feature",
  "rustc_fs_util",
+ "rustc_index",
  "rustc_macros",
  "rustc_serialize",
  "rustc_span",

compiler/rustc_abi/Cargo.toml

@@ -15,7 +15,9 @@ rustc_serialize = { path = "../rustc_serialize", optional = true  }
 
 [features]
 default = ["nightly", "randomize"]
-randomize = ["rand", "rand_xoshiro"]
+randomize = ["rand", "rand_xoshiro", "nightly"]
+# rust-analyzer depends on this crate and we therefore require it to built on a stable toolchain
+# without depending on rustc_data_structures, rustc_macros and rustc_serialize
 nightly = [
     "rustc_data_structures",
     "rustc_index/nightly",