Update several scripts

- Update backup format as we might be patching multiple partitions
- Update uninstaller to remove files in persist (sepolicy.rule)
- Better handling for dtb/dtbo partition patching

app/src/main/java/com/topjohnwu/magisk/tasks/MagiskInstaller.kt

@@ -287,8 +287,10 @@ abstract class MagiskInstaller {
     protected fun flashBoot(): Boolean {
         if (!"direct_install $installDir $srcBoot".sh().isSuccess)
             return false
-        if (!Info.keepVerity)
-            "patch_dtbo_image".sh()
+        arrayOf(
+            "(KEEPVERITY=${Info.keepVerity} patch_dtb_partitions)",
+            "run_migrations"
+        ).sh()
         return true
     }
 

app/src/main/java/com/topjohnwu/magisk/ui/SplashActivity.kt

@@ -49,7 +49,7 @@ open class SplashActivity : Activity() {
         // Setup shortcuts
         Shortcuts.setup(this)
 
-        Shell.su("mm_patch_dtbo").submit {
+        Shell.su("mm_patch_dtb").submit {
             if (it.isSuccess)
                 Notifications.dtboPatched(this)
         }

app/src/main/java/com/topjohnwu/magisk/utils/RootInit.kt

@@ -29,11 +29,12 @@ class RootInit : Shell.Initializer() {
             job.add(context.rawResource(R.raw.nonroot_utils))
         }
 
-        job.add("mount_partitions",
-                "get_flags",
-                "run_migrations",
-                "export BOOTMODE=true")
-                .exec()
+        job.add(
+            "mount_partitions",
+            "get_flags",
+            "run_migrations",
+            "export BOOTMODE=true"
+        ).exec()
 
         Info.keepVerity = ShellUtils.fastCmd("echo \$KEEPVERITY").toBoolean()
         Info.keepEnc = ShellUtils.fastCmd("echo \$KEEPFORCEENCRYPT").toBoolean()