Add -Zembed-metadata CLI option

Author: Kobzol

compiler/rustc_interface/src/tests.rs

@@ -787,6 +787,7 @@ fn test_unstable_options_tracking_hash() {
 tracked!(direct_access_external_data,Some(true));
 tracked!(dual_proc_macros,true);
 tracked!(dwarf_version,Some(5));
+tracked!(embed_metadata,false);
 tracked!(embed_source,true);
 tracked!(emit_thin_lto,false);
 tracked!(emscripten_wasm_eh,true);

compiler/rustc_session/src/options.rs

@@ -2175,6 +2175,8 @@ options! {
  them only if an error has not been emitted"),
  ehcont_guard:bool = (false, parse_bool,[TRACKED],
 "generate Windows EHCont Guard tables"),
+ embed_metadata:bool = (true, parse_bool,[TRACKED],
+"embed metadata in rlibs and dylibs (default: yes)"),
  embed_source:bool = (false, parse_bool,[TRACKED],
 "embed source text in DWARF debug sections (default: no)"),
  emit_stack_sizes:bool = (false, parse_bool,[UNTRACKED],