all: replace []byte with []u8

vlib/net/http/request.v

@@ -182,11 +182,11 @@ pub fn parse_request(mut reader io.BufferedReader) ?Request {
 	mut request := parse_request_head(mut reader) ?
 
 	// body
-	mut body := []byte{}
+	mut body := []u8{}
 	if length := request.header.get(.content_length) {
 		n := length.int()
 		if n > 0 {
-			body = []byte{len: n}
+			body = []u8{len: n}
 			mut count := 0
 			for count < body.len {
 				count += reader.read(mut body[count..]) or { break }

vlib/net/http/request_test.v

@@ -8,7 +8,7 @@ mut:
 	place int
 }
 
-fn (mut s StringReader) read(mut buf []byte) ?int {
+fn (mut s StringReader) read(mut buf []u8) ?int {
 	if s.place >= s.text.len {
 		return none
 	}

vlib/net/http/response.v

@@ -21,8 +21,8 @@ fn (mut resp Response) free() {
 }
 
 // Formats resp to bytes suitable for HTTP response transmission
-pub fn (resp Response) bytes() []byte {
-	// TODO: build []byte directly; this uses two allocations
+pub fn (resp Response) bytes() []u8 {
+	// TODO: build []u8 directly; this uses two allocations
 	return resp.bytestr().bytes()
 }