create mode 100644 doc/langref/grammar.peg
 delete mode 100644 lib/std/zig/AstSmith.zig
 create mode 100644 lib/std/zig/parser_fuzz.zig
 create mode 100644 lib/std/zig/parser_generated_oracle.zig
 create mode 100644 tools/gen_parser_oracle.zig