vlib,cgen: cleanup array inits using `.repeat() instead of new init syntax

vlib/builtin/bare/.checks/forkedtest/forkedtest.v

@@ -7,7 +7,7 @@ pub fn run (op fn(), label string, code Wi_si_code, status int) int {
 		sys_exit(0)
 	}
 
-	siginfo := [0].repeat(int(Sig_index.si_size))
+	siginfo := []int{len:int(Sig_index.si_size)}
 
 	e := sys_waitid(.p_pid, child, intptr(&siginfo[0]), .wexited, 0)
 

vlib/builtin/bare/.checks/linuxsys/linuxsys.v

@@ -40,7 +40,7 @@ fn check_read_write_pipe() {
 	//		sys_read
 	//		sys_close
 	//
-	buffer0 := [byte(0)].repeat(128)
+	buffer0 := []byte{len:(128)}
 	buffer := byteptr(buffer0.data)
 
 	fd := [-1, -1]
@@ -87,7 +87,7 @@ fn check_read_file() {
 			sys_close
 			sys_open
 	*/
-	buffer0 := [byte(0)].repeat(128)
+	buffer0 := []byte{len:(128)}
 	buffer := byteptr(buffer0.data)
 
 	test_file := "sample_text1.txt"

vlib/builtin/bare/.checks/string/string.v

@@ -8,7 +8,7 @@ fn check_string_eq () {
 }
 
 fn check_i64_tos() {
-	buffer0 := [byte(0)].repeat(128)
+	buffer0 := []byte{len:(128)}
 	buffer := byteptr(buffer0.data)
 
 	s0 := i64_tos(buffer, 70, 140, 10)

vlib/builtin/int.v

@@ -399,7 +399,7 @@ pub fn (c byte) is_capital() bool {
 }
 
 pub fn (b []byte) clone() []byte {
-	mut res := [byte(0)].repeat(b.len)
+	mut res := []byte{len: b.len}
 	//mut res := make([]byte, {repeat:b.len})
 	for i in 0..b.len {
 		res[i] = b[i]

vlib/builtin/sorted_map.v

@@ -379,7 +379,7 @@ fn (n &mapnode) subkeys(mut keys []string, at int) int {
 }
 
 pub fn (m &SortedMap) keys() []string {
-	mut keys := [''].repeat(m.len)
+	mut keys := []string{len:m.len}
 	if isnil(m.root) || m.root.len == 0 {
 		return keys
 	}

vlib/builtin/string.v

@@ -595,7 +595,7 @@ fn (s string) index_kmp(p string) int {
 	if p.len > s.len {
 		return -1
 	}
-	mut prefix := [0].repeat(p.len)
+	mut prefix := []int{len:p.len}
 	mut j := 0
 	for i := 1; i < p.len; i++ {
 		for p.str[j] != p.str[i] && j > 0 {
@@ -1326,7 +1326,7 @@ pub fn (s string) bytes() []byte {
 	if s.len == 0 {
 		return []
 	}
-	mut buf := [byte(0)].repeat(s.len)
+	mut buf := []byte{ len:s.len }
 	C.memcpy(buf.data, s.str, s.len)
 	return buf
 }