*Title: Template 'fetch' functions for 'setup' module'

Incentive:
Add the ability to retrieve information about version of eZPublish
out of templates.

*Documentation:
Function name   : 'version'
Parameters      : none
Return value    : full version of eZPublish
Example         : fetch( setup, version ) => '3.5.0rc1'

Function name   : 'major_version'
Parameters      : none
Return value    : major number
Example         : fetch( setup, major_version ) => '3'

Function name   : 'minor_version'
Parameters      : none
Return value    : minor number
Example         : fetch( setup, minor_version ) => '5'

Function name   : 'release'
Parameters      : none
Return value    : release number
Example         : fetch( setup, release ) => '0'

Function name   : 'state'
Parameters      : none
Return value    : state
Example         : fetch( setup, state ) => 'rc1'

Function name   : 'is_development'
Parameters      : none
Return value    : returns 'true' if this is a development version, otherwise 'false'
Example         : fetch( setup, is_development ) => (bool)true

Function name   : 'revision'
Parameters      : none
Return value    : revision number
Example         : fetch( setup, version ) => '9305'

Function name   : 'database_version'
Parameters      : if 'with_release' parameter is set to 'false' then release number
                  will not be added to database version string. 
                  By default 'with_release' is 'true'
Return value    : database version
Example         : fetch( setup, database_version ) => '3.5.0rc1-3'
                  fetch( setup, database_version, hash( with_release, false() ) => '3.5.0rc1'

Function name   : 'database_release'
Parameters      : none
Return value    : number of database release
Example         : fetch( setup, database_release ) => '3'

*Testing:

*SVN Revisions:
9309