Bumped manifest to 4.322

<?xml version="1.0" encoding="utf-8"?>

<manifest

    xmlns:android="http://schemas.android.com/apk/res/android"

    android:versionCode="17022"

    android:versionName="4.321" package="com.fsck.k9"

    android:versionCode="17023"

    android:versionName="4.322" package="com.fsck.k9"

    >

    <uses-sdk

       android:minSdkVersion="7"