meson: reindent all files with 8 spaces

The indentation for emacs'es meson-mode is added .dir-locals.

All files are reindented automatically, using the lasest meson-mode from git.
Indentation should now be fairly consistent.

rules/meson.build

@@ -1,40 +1,38 @@
-# -*- mode: meson -*-
-
 rules = files('''
-  60-block.rules
-  60-cdrom_id.rules
-  60-drm.rules
-  60-evdev.rules
-  60-persistent-alsa.rules
-  60-persistent-input.rules
-  60-persistent-storage.rules
-  60-persistent-storage-tape.rules
-  60-persistent-v4l.rules
-  60-sensor.rules
-  60-serial.rules
-  64-btrfs.rules
-  70-mouse.rules
-  70-touchpad.rules
-  75-net-description.rules
-  75-probe_mtd.rules
-  78-sound-card.rules
-  80-drivers.rules
-  80-net-setup-link.rules
+        60-block.rules
+        60-cdrom_id.rules
+        60-drm.rules
+        60-evdev.rules
+        60-persistent-alsa.rules
+        60-persistent-input.rules
+        60-persistent-storage.rules
+        60-persistent-storage-tape.rules
+        60-persistent-v4l.rules
+        60-sensor.rules
+        60-serial.rules
+        64-btrfs.rules
+        70-mouse.rules
+        70-touchpad.rules
+        75-net-description.rules
+        75-probe_mtd.rules
+        78-sound-card.rules
+        80-drivers.rules
+        80-net-setup-link.rules
 '''.split())
 
 install_data(rules,
              install_dir : udevrulesdir)
 
 rules_in = '''
-  50-udev-default.rules
-  99-systemd.rules
+        50-udev-default.rules
+        99-systemd.rules
 '''.split()
 
 foreach file : rules_in
-  gen = configure_file(
-      input : file + '.in',
-      output : file,
-      configuration : substs)
-  install_data(gen,
-               install_dir : udevrulesdir)
+        gen = configure_file(
+                input : file + '.in',
+                output : file,
+                configuration : substs)
+        install_data(gen,
+                     install_dir : udevrulesdir)
 endforeach