Add #+escape-analysis and #+no-escape-analysis file tags, and keep the syntactic check of unsafe returns where the escape analysis is disabled

src/checker.cpp

@@ -6852,7 +6852,7 @@ gb_internal bool check_proc_info(Checker *c, ProcInfo *pi, UntypedExprInfoMap *u
 
 	if (body_was_checked) {
 		pi->decl->proc_info = pi;
-		if (!build_context.no_escape_analysis) {
+		if (escape_analysis_in_use()) {
 			per_thread_array_add(&c->info.checked_bodies_queue, pi);
 		}
 		pi->decl->proc_checked_state.store(ProcCheckedState_Checked);
@@ -8074,7 +8074,7 @@ gb_internal void check_parsed_files(Checker *c) {
 
 	debugf("Total Procedure Bodies Checked: %td\n", total_bodies_checked.load(std::memory_order_relaxed));
 
-	if (!build_context.no_escape_analysis) {
+	if (escape_analysis_in_use()) {
 		TIME_SECTION("check escapes");
 		check_escapes(c);
 	}