Version code cleanup

  > Renaming Lmp to Lollipop
  > Lollipop_MR1 instead of directly using 22
  > Using M APIs directly instead of reflection

Change-Id: I10a307f46e3be15b3299f549a2fd7e0e215a6a1b
diff --git a/src/com/android/launcher3/LauncherAppState.java b/src/com/android/launcher3/LauncherAppState.java
index 52f85ea..d87ad67 100644
--- a/src/com/android/launcher3/LauncherAppState.java
+++ b/src/com/android/launcher3/LauncherAppState.java
@@ -127,7 +127,7 @@
     LauncherModel setLauncher(Launcher launcher) {
         getLauncherProvider().setLauncherProviderChangeListener(launcher);
         mModel.initialize(launcher);
-        mAccessibilityDelegate = ((launcher != null) && Utilities.isLmpOrAbove()) ?
+        mAccessibilityDelegate = ((launcher != null) && Utilities.ATLEAST_LOLLIPOP) ?
             new LauncherAccessibilityDelegate(launcher) : null;
         return mModel;
     }