Move windows_subsystem field from CodegenResults to CrateInfo

compiler/rustc_codegen_ssa/src/lib.rs

@@ -141,6 +141,7 @@ pub struct CrateInfo {
     pub lang_item_to_crate: FxHashMap<LangItem, CrateNum>,
     pub missing_lang_items: FxHashMap<CrateNum, Vec<LangItem>>,
     pub dependency_formats: Lrc<Dependencies>,
+    pub windows_subsystem: Option<String>,
 }
 
 #[derive(Encodable, Decodable)]
@@ -150,7 +151,6 @@ pub struct CodegenResults {
     pub allocator_module: Option<CompiledModule>,
     pub metadata_module: Option<CompiledModule>,
     pub metadata: rustc_middle::middle::cstore::EncodedMetadata,
-    pub windows_subsystem: Option<String>,
     pub linker_info: back::linker::LinkerInfo,
     pub crate_info: CrateInfo,
 }