rename std extensions and clean up imports

std/arraylist/arraylist.hon

@@ -1,4 +1,4 @@
-mem :: import "@std/mem"
+import "@std/mem"
 
 ArrayList func($T type) type {
 	return struct {

std/debug/debug.hon

@@ -1,5 +1,5 @@
-c :: import "@ffi/c"
-io :: import "@std/io"
+import "@ffi/c"
+import "@std/io"
 
 hide write func(_ ?*mut anyopaque, _ io.WriteStream, bytes []u8) usize ! io.WriteError {
 	request usize = bytes.len

std/io/io.hon

@@ -1,5 +1,5 @@
-c :: import "@ffi/c"
-meta :: import "@std/meta"
+import "@ffi/c"
+import "@std/meta"
 
 ReadError :: enum {
 	read_failed
@@ -276,7 +276,7 @@ hide write_integer func(writer Writer, $T type, value T, base u64, uppercase boo
 	return
 }
 
-# ponytail: libc keeps float formatting small; replace it with a native shortest-roundtrip writer if locale independence matters.
+# note: libc keeps float formatting small; replace it with a native shortest-roundtrip writer if locale independence matters.
 hide write_float func(writer Writer, $T type, value T, scientific bool) void ! WriteError {
 	match typeinfo!(T) {
 		.float: {
@@ -353,12 +353,7 @@ hide write_default func(writer Writer, $T type, value T) void ! WriteError {
 	return
 }
 
-print func(
-	writer Writer,
-	$format []u8,
-	$Args type,
-	args Args,
-) void ! WriteError {
+print func(writer Writer, $format []u8, $Args type, args Args) void ! WriteError {
 	inline for parse_format(format.len, format, Args) |token| {
 		if (token.kind == .unused) {
 			break

std/mem/mem.hon

@@ -1,4 +1,4 @@
-c :: import "@ffi/c"
+import "@ffi/c"
 
 AllocError :: enum {
 	out_of_memory

std/process/process.hon

@@ -1,4 +1,4 @@
-io :: import "@std/io"
+import "@std/io"
 
 Init :: struct {
 	io io.Io