std: Convert deprecated aliases to compile errors and fix usages

Deprecated aliases that are now compile errors:

- `std.fs.MAX_PATH_BYTES` (renamed to `std.fs.max_path_bytes`)
- `std.mem.tokenize` (split into `tokenizeAny`, `tokenizeSequence`, `tokenizeScalar`)
- `std.mem.split` (split into `splitSequence`, `splitAny`, `splitScalar`)
- `std.mem.splitBackwards` (split into `splitBackwardsSequence`, `splitBackwardsAny`, `splitBackwardsScalar`)
- `std.unicode`
  + `utf16leToUtf8Alloc`, `utf16leToUtf8AllocZ`, `utf16leToUtf8`, `fmtUtf16le` (all renamed to have capitalized `Le`)
  + `utf8ToUtf16LeWithNull` (renamed to `utf8ToUtf16LeAllocZ`)
- `std.zig.CrossTarget` (moved to `std.Target.Query`)

Deprecated `lib/std/std.zig` decls were deleted instead of made a `@compileError` because the `refAllDecls` in the test block would trigger the `@compileError`. The deleted top-level `std` namespaces are:

- `std.rand` (renamed to `std.Random`)
- `std.TailQueue` (renamed to `std.DoublyLinkedList`)
- `std.ChildProcess` (renamed/moved to `std.process.Child`)

This is not exhaustive. Deprecated aliases that I didn't touch:
  + `std.io.*`
  + `std.Build.*`
  + `std.builtin.Mode`
  + `std.zig.c_translation.CIntLiteralRadix`
  + anything in `src/`

1 files changed, 6 insertions, 6 deletions

diff --git a/lib/std/Build/Cache/Path.zig b/lib/std/Build/Cache/Path.zig
index 99ce2e12ee..27dd15184b 100644
--- a/lib/std/Build/Cache/Path.zig
+++ b/lib/std/Build/Cache/Path.zig
@@ -49,7 +49,7 @@ pub fn openFile(
     sub_path: []const u8,
     flags: fs.File.OpenFlags,
 ) !fs.File {
-    var buf: [fs.MAX_PATH_BYTES]u8 = undefined;
+    var buf: [fs.max_path_bytes]u8 = undefined;
     const joined_path = if (p.sub_path.len == 0) sub_path else p: {
         break :p std.fmt.bufPrint(&buf, "{s}" ++ fs.path.sep_str ++ "{s}", .{
             p.sub_path, sub_path,
@@ -59,7 +59,7 @@ pub fn openFile(
 }
 
 pub fn makeOpenPath(p: Path, sub_path: []const u8, opts: fs.OpenDirOptions) !fs.Dir {
-    var buf: [fs.MAX_PATH_BYTES]u8 = undefined;
+    var buf: [fs.max_path_bytes]u8 = undefined;
     const joined_path = if (p.sub_path.len == 0) sub_path else p: {
         break :p std.fmt.bufPrint(&buf, "{s}" ++ fs.path.sep_str ++ "{s}", .{
             p.sub_path, sub_path,
@@ -69,7 +69,7 @@ pub fn makeOpenPath(p: Path, sub_path: []const u8, opts: fs.OpenDirOptions) !fs.
 }
 
 pub fn statFile(p: Path, sub_path: []const u8) !fs.Dir.Stat {
-    var buf: [fs.MAX_PATH_BYTES]u8 = undefined;
+    var buf: [fs.max_path_bytes]u8 = undefined;
     const joined_path = if (p.sub_path.len == 0) sub_path else p: {
         break :p std.fmt.bufPrint(&buf, "{s}" ++ fs.path.sep_str ++ "{s}", .{
             p.sub_path, sub_path,
@@ -82,7 +82,7 @@ pub fn atomicFile(
     p: Path,
     sub_path: []const u8,
     options: fs.Dir.AtomicFileOptions,
-    buf: *[fs.MAX_PATH_BYTES]u8,
+    buf: *[fs.max_path_bytes]u8,
 ) !fs.AtomicFile {
     const joined_path = if (p.sub_path.len == 0) sub_path else p: {
         break :p std.fmt.bufPrint(buf, "{s}" ++ fs.path.sep_str ++ "{s}", .{
@@ -93,7 +93,7 @@ pub fn atomicFile(
 }
 
 pub fn access(p: Path, sub_path: []const u8, flags: fs.File.OpenFlags) !void {
-    var buf: [fs.MAX_PATH_BYTES]u8 = undefined;
+    var buf: [fs.max_path_bytes]u8 = undefined;
     const joined_path = if (p.sub_path.len == 0) sub_path else p: {
         break :p std.fmt.bufPrint(&buf, "{s}" ++ fs.path.sep_str ++ "{s}", .{
             p.sub_path, sub_path,
@@ -103,7 +103,7 @@ pub fn access(p: Path, sub_path: []const u8, flags: fs.File.OpenFlags) !void {
 }
 
 pub fn makePath(p: Path, sub_path: []const u8) !void {
-    var buf: [fs.MAX_PATH_BYTES]u8 = undefined;
+    var buf: [fs.max_path_bytes]u8 = undefined;
     const joined_path = if (p.sub_path.len == 0) sub_path else p: {
         break :p std.fmt.bufPrint(&buf, "{s}" ++ fs.path.sep_str ++ "{s}", .{
             p.sub_path, sub_path,