update standalone and incremental tests to new API

tools/gen_spirv_spec.zig

@@ -91,9 +91,10 @@ pub fn main() !void {
 
     try readExtRegistry(&exts, a, std.fs.cwd(), args[2]);
 
-    var bw = std.io.bufferedWriter(std.io.getStdOut().writer());
-    try render(bw.writer(), a, core_spec, exts.items);
-    try bw.flush();
+    var buffer: [4000]u8 = undefined;
+    var w = std.fs.File.stdout().writerStreaming(&buffer);
+    try render(&w, a, core_spec, exts.items);
+    try w.flush();
 }
 
 fn readExtRegistry(exts: *std.ArrayList(Extension), a: Allocator, dir: std.fs.Dir, sub_path: []const u8) !void {
@@ -166,7 +167,7 @@ fn tagPriorityScore(tag: []const u8) usize {
     }
 }
 
-fn render(writer: anytype, a: Allocator, registry: CoreRegistry, extensions: []const Extension) !void {
+fn render(writer: *std.io.Writer, a: Allocator, registry: CoreRegistry, extensions: []const Extension) !void {
     try writer.writeAll(
         \\//! This file is auto-generated by tools/gen_spirv_spec.zig.
         \\
@@ -188,15 +189,10 @@ fn render(writer: anytype, a: Allocator, registry: CoreRegistry, extensions: []c
         \\    none,
         \\    _,
         \\
-        \\    pub fn format(
-        \\        self: IdResult,
-        \\        comptime _: []const u8,
-        \\        _: std.fmt.FormatOptions,
-        \\        writer: anytype,
-        \\    ) @TypeOf(writer).Error!void {
+        \\    pub fn format(self: IdResult, writer: *std.io.Writer) std.io.Writer.Error!void {
         \\        switch (self) {
         \\            .none => try writer.writeAll("(none)"),
-        \\            else => try writer.print("%{}", .{@intFromEnum(self)}),
+        \\            else => try writer.print("%{d}", .{@intFromEnum(self)}),
         \\        }
         \\    }
         \\};
@@ -899,7 +895,8 @@ fn parseHexInt(text: []const u8) !u31 {
 }
 
 fn usageAndExit(arg0: []const u8, code: u8) noreturn {
-    std.io.getStdErr().writer().print(
+    const stderr = std.debug.lockStderrWriter(&.{});
+    stderr.print(
         \\Usage: {s} <SPIRV-Headers repository path> <path/to/zig/src/codegen/spirv/extinst.zig.grammar.json>
         \\
         \\Generates Zig bindings for SPIR-V specifications found in the SPIRV-Headers