Fix file load order and allow when statements at file scope

examples/demo.odin

@@ -1,26 +1,25 @@
 import "core:fmt.odin";
 import "core:strconv.odin";
 import "core:mem.odin";
-import "core:atomics.odin";
 import "core:bits.odin";
 import "core:hash.odin";
 import "core:math.odin";
-import "core:opengl.odin";
 import "core:os.odin";
 import "core:raw.odin";
 import "core:sort.odin";
 import "core:strings.odin";
-import "core:sync.odin";
 import "core:types.odin";
-import "core:utf8.odin";
 import "core:utf16.odin";
+import "core:utf8.odin";
+// import "core:sync.odin";
 
 when ODIN_OS == "windows" {
+	import "core:atomics.odin";
+	import "core:opengl.odin";
 	import "core:thread.odin";
 	import win32 "core:sys/windows.odin";
 }
 
-
 general_stuff :: proc() {
 	{ // `do` for inline statmes rather than block
 		foo :: proc() do fmt.println("Foo!");
@@ -585,6 +584,7 @@ threading_example :: proc() {
 	}
 }
 
+
 main :: proc() {
 	when false {
 		fmt.println("\n# general_stuff");              general_stuff();