title: QMYSQL driver not loaded Qt 5.6 Linux Ubuntu 16.04
body: <p>i know that these question asked many times but i try all solution here and from another site but all not working for me what i try is <br>
  <strong>1 - install libqt5sql5-mysql <br>
  2 - install libqt4-sql-mysql <br>
  3 - use QPluginLoader to load sql driver <br>
  4 - copy the folder of sql driver to my debug folder <br></strong>
  <strong><em><br> 
  QSqlDatabase: QMYSQL driver not loaded<br>
  QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3 QPSQL QPSQL7 <br>
  <br></em></strong>
  i have this problem on windows i solve it by using mcsv 64 it doest work for 32 or for mingw compiler but i dont know how to solve this problem on linux 
  <br> 
  my os is 
  <br> 
  - <strong>ubuntu 16.04 LTS 64-bit</strong> 
  <br> - <strong>Mysql compile machine is x86_64</strong>
  <br>
  code i use to connect to database 
  <br></p>
  
  <pre><code>QSqlDatabase dp = QSqlDatabase::addDatabase("QMYSQL","first");
  dp.setDatabaseName("Test");
  dp.setHostName("localhost");
  dp.setUserName("root");
  dp.setPassword("root");
  dp.setPort(3306);
  if (dp.open()){
      QMessageBox::information(nullptr,"Succsefull","Connect To Mysql");
  }
  else{
      QMessageBox::critical(nullptr,"Error",dp.lastError().text());
  }
  </code></pre>