std.Target: Move osArchName() and Cpu.Arch.archName() to std.zig.target.
These deal with how Zig stores OS headers in `lib/libc/include` and so don't
really belong in std.Target.
e62352611fAlex Rønne Petersen committed on 2/17/2025, 6:17:56 PMparentce8c61b