Use packageName "system" for system dialogues

The actual package name from the activity info is "android". However, the
same name is also used for the system_server. It has been a common pattern
to check for this package name before hooking any system services. Now,
this check would also be true for certain system dialogues and break
existing modules (causing ClassNotFoundExceptions).

For the very few cases where a module needs to hook into this process, it
can simply check for package name "system" instead.

src/de/robv/android/xposed/XposedBridge.java

@@ -183,9 +183,10 @@ protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
 				SELinuxHelper.initForProcess();
 				ActivityThread activityThread = (ActivityThread) param.thisObject;
 				ApplicationInfo appInfo = (ApplicationInfo) getObjectField(param.args[0], "appInfo");
+				String reportedPackageName = appInfo.packageName.equals("android") ? "system" : appInfo.packageName;
 				ComponentName instrumentationName = (ComponentName) getObjectField(param.args[0], "instrumentationName");
 				if (instrumentationName != null) {
-					XposedBridge.log("Instrumentation detected, disabling framework for " + appInfo.packageName);
+					XposedBridge.log("Instrumentation detected, disabling framework for " + reportedPackageName);
 					disableHooks = true;
 					return;
 				}
@@ -194,19 +195,19 @@ protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
 					return;
 
 				setObjectField(activityThread, "mBoundApplication", param.args[0]);
-				loadedPackagesInProcess.add(appInfo.packageName);
+				loadedPackagesInProcess.add(reportedPackageName);
 				LoadedApk loadedApk = activityThread.getPackageInfoNoCheck(appInfo, compatInfo);
 				XResources.setPackageNameForResDir(appInfo.packageName, loadedApk.getResDir());
 
 				LoadPackageParam lpparam = new LoadPackageParam(sLoadedPackageCallbacks);
-				lpparam.packageName = appInfo.packageName;
+				lpparam.packageName = reportedPackageName;
 				lpparam.processName = (String) getObjectField(param.args[0], "processName");
 				lpparam.classLoader = loadedApk.getClassLoader();
 				lpparam.appInfo = appInfo;
 				lpparam.isFirstApplication = true;
 				XC_LoadPackage.callAll(lpparam);
 
-				if (appInfo.packageName.equals(INSTALLER_PACKAGE_NAME))
+				if (reportedPackageName.equals(INSTALLER_PACKAGE_NAME))
 					hookXposedInstaller(lpparam.classLoader);
 			}
 		});