Experiment: Switch to a cfg-if that does not depend on compiler_Builtins

(cherry picked from commit 6b0ae3b)

Author: tgross35

library/Cargo.lock

@@ -51,11 +51,9 @@ dependencies = [
 
 [[package]]
 name = "cfg-if"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+version = "1.0.1"
+source = "git+https://github.com/tgross35/cfg-if.git?branch=no-compiler-builtins#91c07fb51b83c24c65383d82a2f7a46e55b4ce39"
 dependencies = [
- "compiler_builtins 0.1.160 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-std-workspace-core",
 ]
 

library/Cargo.toml

@@ -50,3 +50,4 @@ rustc-demangle.opt-level = "s"
 rustc-std-workspace-core = { path = 'rustc-std-workspace-core' }
 rustc-std-workspace-alloc = { path = 'rustc-std-workspace-alloc' }
 rustc-std-workspace-std = { path = 'rustc-std-workspace-std' }
+cfg-if = { git = "https://github.com/tgross35/cfg-if.git", branch = "no-compiler-builtins"}