std.zig.system: Handle thumb/thumbeb for QEMU in getExternalExecutor().

Author: alexrp

lib/std/zig/system.zig

@@ -83,8 +83,8 @@ pub fn getExternalExecutor(
         return switch (candidate.cpu.arch) {
             .aarch64 => Executor{ .qemu = "qemu-aarch64" },
             .aarch64_be => Executor{ .qemu = "qemu-aarch64_be" },
-            .arm => Executor{ .qemu = "qemu-arm" },
-            .armeb => Executor{ .qemu = "qemu-armeb" },
+            .arm, .thumb => Executor{ .qemu = "qemu-arm" },
+            .armeb, .thumbeb => Executor{ .qemu = "qemu-armeb" },
             .hexagon => Executor{ .qemu = "qemu-hexagon" },
             .loongarch64 => Executor{ .qemu = "qemu-loongarch64" },
             .m68k => Executor{ .qemu = "qemu-m68k" },