call the C function wrappers instead of the C functions directly in .v files (#26737)

Author: kimshrier

vlib/builtin/array.v

@@ -980,7 +980,7 @@ pub fn (mut a array) sort_with_compare(callback fn (voidptr, voidptr) int) {
 // See also .sort_with_compare()
 pub fn (a &array) sorted_with_compare(callback fn (voidptr, voidptr) int) array {
 	mut r := a.clone()
-	unsafe { C.qsort(r.data, usize(r.len), usize(r.element_size), voidptr(callback)) }
+	unsafe { vqsort(r.data, usize(r.len), usize(r.element_size), callback) }
 	return r
 }
 

vlib/builtin/map.v

@@ -228,7 +228,7 @@ fn map_map_eq(a map, b map) bool {
 		}
 		va := a.key_values.value(i)
 		vb := b.get(k, va)
-		if unsafe { C.memcmp(va, vb, a.value_bytes) } != 0 {
+		if unsafe { vmemcmp(va, vb, a.value_bytes) } != 0 {
 			return false
 		}
 	}
@@ -242,7 +242,7 @@ fn map_clone_string(dest voidptr, pkey voidptr) {
 		cloned := s.clone()
 		// Use memcpy for native backend compatibility
 		// (*&string(dest)) = cloned doesn't reliably store full struct
-		C.memcpy(dest, voidptr(&cloned), sizeof(string))
+		vmemcpy(dest, voidptr(&cloned), sizeof(string))
 	}
 }