优化下载服务中检测apk完整性时顺便同步检查版本号是否和当前吧版本号一致，如果一致认为就是最新包不再重复安装

common/src/main/java/com/yunbao/common/server/DownloadService.java

@@ -188,8 +188,10 @@ public class DownloadService extends Service {
         if (downloadFile == null || !downloadFile.exists()) return false;
         try {
             PackageManager pm = mContext.getPackageManager();
+            PackageInfo packageInfo = pm.getPackageInfo(getPackageName(), Context.MODE_PRIVATE);
             PackageInfo info = pm.getPackageArchiveInfo(downloadFile.getAbsolutePath(), PackageManager.GET_ACTIVITIES);
             if (info == null) return false;
+            if(info.versionCode == packageInfo.versionCode) return false;
         } catch (Exception e) {
             e.printStackTrace();
         }