v.builder: support -d trace_type_symbols_after_checker

Author: spytheman

cmd/tools/vtest-all.v

@@ -91,7 +91,7 @@ fn get_all_commands() []Command {
 		rmfile: 'examples/hello_world'
 	}
 	res << Command{
-		line:   '${vexe} -W -Wimpure-v run examples/hello_world.v'
+		line:   '${vexe} -W -Wimpure-v examples/hello_world.v'
 		okmsg:  'V can compile hello world with the stricter `-W -Wimpure-v` mode .'
 		rmfile: 'examples/hello_world'
 	}

vlib/v/builder/builder.v

@@ -131,6 +131,11 @@ pub fn (mut b Builder) middle_stages() ! {
 
 	b.checker.check_files(b.parsed_files)
 	util.timing_measure('CHECK')
+	$if trace_type_symbols_after_checker ? {
+		for t, s in b.table.type_symbols {
+			println('> t: ${t:10} | s.mod: ${s.mod:-40} | s.name: ${'${s.name#[..30]}':-30} | s.is_builtin: ${s.is_builtin:6} | s.is_pub: ${s.is_pub}')
+		}
+	}
 	if b.pref.dump_defines != '' {
 		b.dump_defines()
 	}