title: Liquibase not working with mysql autoincrement
body: <p>I try to create a new table via a liquibase changeset that looks like:</p>
  
  <pre><code>    &lt;createTable tableName="mytable"&gt;
          &lt;column name="id" type="number" autoIncrement="true"&gt;
              &lt;constraints primaryKey="true" nullable="false"/&gt;
          &lt;/column&gt;
          &lt;column name="name" type="varchar(50)"/&gt;
          &lt;column name="description" type="varchar(255)"/&gt;
          &lt;column name="image_path" type="varchar(255)"/&gt;
      &lt;/createTable&gt;
  </code></pre>
  
  <p>this fails with following error: </p>
  
  <pre><code>liquibase.exception.DatabaseException: 
  Error executing SQL CREATE TABLE 
  kkm.mytable (id numeric AUTO_INCREMENT NOT NULL, name VARCHAR(50) NULL, description 
               VARCHAR(255) NULL, image_path VARCHAR(255) NULL, 
               CONSTRAINT PK_BOUFFE PRIMARY KEY (id)): 
  Incorrect column specifier for column 'id'
  </code></pre>
  
  <p>if I set autoIncrement="false", this works perfectly.
  <br>Is this a known issue ?</p>
  
  <p><strong>EDIT:</strong></p>
  
  <p>this is working:</p>
  
  <pre><code>    &lt;createTable tableName="mytable"&gt;
          &lt;column name="id" type="number" autoIncrement="false"&gt;
              &lt;constraints primaryKey="true" nullable="false"/&gt;
          &lt;/column&gt;
          &lt;column name="name" type="varchar(50)"/&gt;
          &lt;column name="description" type="varchar(255)"/&gt;
          &lt;column name="image_path" type="varchar(255)"/&gt;
      &lt;/createTable&gt;
  
      &lt;addAutoIncrement
              columnDataType="int"
              columnName="id"
              incrementBy="1"
              startWith="1"
              tableName="mytable"/&gt;
  </code></pre>