Inherit ABI when moving existing install.

Previously installed apps are moved between volumes as an complete
package, including any previously unpacked native libraries.  This
means we need to inherit any previously derived ABI when moving.

Bug: 22093837
Change-Id: I7656e338affa44e7f997fe4aa95bb297c0acc165

services/core/java/com/android/server/pm/PackageManagerService.java

@@ -12271,6 +12271,20 @@ public class PackageManagerService extends IPackageManager.Stub {
             // We did an in-place move, so dex is ready to roll
             scanFlags |= SCAN_NO_DEX;
             scanFlags |= SCAN_MOVE;
+
+            synchronized (mPackages) {
+                final PackageSetting ps = mSettings.mPackages.get(pkgName);
+                if (ps == null) {
+                    res.setError(INSTALL_FAILED_INTERNAL_ERROR,
+                            "Missing settings for moved package " + pkgName);
+                }
+
+                // We moved the entire application as-is, so bring over the
+                // previously derived ABI information.
+                pkg.applicationInfo.primaryCpuAbi = ps.primaryCpuAbiString;
+                pkg.applicationInfo.secondaryCpuAbi = ps.secondaryCpuAbiString;
+            }
+
         } else if (!forwardLocked && !pkg.applicationInfo.isExternalAsec()) {
             // Enable SCAN_NO_DEX flag to skip dexopt at a later stage
             scanFlags |= SCAN_NO_DEX;