Make core::os get_page_size contextless

core/os/os_darwin.odin

@@ -982,7 +982,7 @@ dlerror :: proc() -> string {
 	return string(_unix_dlerror())
 }
 
-get_page_size :: proc() -> int {
+get_page_size :: proc "contextless" () -> int {
 	// NOTE(tetra): The page size never changes, so why do anything complicated
 	// if we don't have to.
 	@static page_size := -1

core/os/os_freebsd.odin

@@ -702,7 +702,7 @@ dlerror :: proc() -> string {
 	return string(_unix_dlerror())
 }
 
-get_page_size :: proc() -> int {
+get_page_size :: proc "contextless" () -> int {
 	// NOTE(tetra): The page size never changes, so why do anything complicated
 	// if we don't have to.
 	@static page_size := -1

core/os/os_js.odin

@@ -237,7 +237,7 @@ last_write_time_by_name :: proc(name: string) -> (File_Time, Errno) {
 }
 
 
-get_page_size :: proc() -> int {
+get_page_size :: proc "contextless" () -> int {
 	unimplemented("core:os procedure not supported on JS target")
 }
 

core/os/os_linux.odin

@@ -1005,7 +1005,7 @@ dlerror :: proc() -> string {
 	return string(_unix_dlerror())
 }
 
-get_page_size :: proc() -> int {
+get_page_size :: proc "contextless" () -> int {
 	// NOTE(tetra): The page size never changes, so why do anything complicated
 	// if we don't have to.
 	@static page_size := -1

core/os/os_openbsd.odin

@@ -697,7 +697,7 @@ dlerror :: proc() -> string {
 	return string(_unix_dlerror())
 }
 
-get_page_size :: proc() -> int {
+get_page_size :: proc "contextless" () -> int {
 	// NOTE(tetra): The page size never changes, so why do anything complicated
 	// if we don't have to.
 	@static page_size := -1

core/os/os_windows.odin

@@ -91,7 +91,7 @@ last_write_time_by_name :: proc(name: string) -> (File_Time, Errno) {
 }
 
 
-get_page_size :: proc() -> int {
+get_page_size :: proc "contextless" () -> int {
 	// NOTE(tetra): The page size never changes, so why do anything complicated
 	// if we don't have to.
 	@static page_size := -1