SearchRequest entity should use a extemely-long field types on Oracle 10g

Currently the SearchRequest entity is defined like this :

 <entity entity-name="SearchRequest" table-name="searchrequest" package-name="">
       ...
        <field name="request" col-name="reqcontent" type="very-long"/>

    </entity>

On Oracle 10g this is defined as varchar(4000). This means that search requests cant be bigger than that.

It could be this :

 <entity entity-name="SearchRequest" table-name="searchrequest" package-name="">
       ...
        <field name="request" col-name="reqcontent" type="extremely-long"/>

    </entity>

We had a customer who migrated from MYSQL (very-long ~ 32K) to ORACLE 10G and had problems because they had search requests > 4K

We should up the limit for Oracle 10g in the next release of JIRA.

We may want to consider other enities that use 'very-long' when we do this.