lang/zig: fix plist

Testport complains of orphans, so add these two @dir entries;
the directories are empty and I don't actually see where they
are created.

Bumping PORTREVISION because the package changes (directories).
While here, sort pkg-plist a little.

lang/zig/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	zig
 DISTVERSION=	0.7.1
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	lang
 MASTER_SITES=	https://ziglang.org/download/${DISTVERSION}/ \
 		https://ziglang.org/builds/

lang/zig/pkg-plist

@@ -4949,7 +4949,6 @@ lib/zig/libc/mingw/lib-common/xinput1_4.def
 lib/zig/libc/mingw/lib32/wldap32.def
 lib/zig/libc/mingw/lib32/xinput1_4.def
 lib/zig/libc/musl/libc.s
-lib/zig/std/segmented_list.zig
 lib/zig/libc/mingw/COPYING
 lib/zig/libc/mingw/complex/_cabs.c
 lib/zig/libc/mingw/complex/cabs.c
@@ -8608,6 +8607,7 @@ lib/zig/std/meta.zig
 lib/zig/std/meta/trailer_flags.zig
 lib/zig/std/meta/trait.zig
 lib/zig/std/mutex.zig
+@dir lib/zig/std/net
 lib/zig/std/net.zig
 lib/zig/std/once.zig
 lib/zig/std/os.zig
@@ -8714,6 +8714,7 @@ lib/zig/std/progress.zig
 lib/zig/std/rand.zig
 lib/zig/std/rand/ziggurat.zig
 lib/zig/std/reset_event.zig
+lib/zig/std/segmented_list.zig
 lib/zig/std/sort.zig
 lib/zig/std/special/build_runner.zig
 lib/zig/std/special/c.zig
@@ -8815,6 +8816,7 @@ lib/zig/std/testing/failing_allocator.zig
 lib/zig/std/thread.zig
 lib/zig/std/time.zig
 lib/zig/std/time/epoch.zig
+@dir lib/zig/std/unicode
 lib/zig/std/unicode.zig
 lib/zig/std/valgrind.zig
 lib/zig/std/valgrind/callgrind.zig