*Title: Improved ezcountry datatype

*Documentation:
The datatype provides support for:
- default selection of countries
- multiple selection of countries
- utility functions.

"country.ini" file has been added.
This file should contain groups of countries only.
Name of group is Alpha-2 code as reserved in ISO 3166-1
(see http://en.wikipedia.org/wiki/ISO_3166-1)

*For example:
  [<Alpha2>]
  Name=<Name of country>
  Alpha2=<Aplha2 code>
  Alpha3=<Alpha3 code>
  IDC=<Internation Dialling Code>
  <Other info>=<value>

Translations of the english countries name can be done using locale files:

*For example:
  [CountryNames]
  Countries[]
  Countries[<Code of country is Alpha-2 code as reserved in ISO 3166-1]=<Translated name>
  Countries[AF]=Translated_Afghanistan
  ...
  Add this group and vars to local files (e.g. rus-RU.ini)
  
Function
=========
The function country_list provides a mechanism for templates to fetch information about countries.

*Usage:

fetch( 'content', 'country_list',
       hash( [ 'filter', filter, ]
             [ 'value', value ]
              ) )
*Parameters:
 Name:              Type:        Required:
 filter             string       no
 value              string       no

 NOTE: 'filter' is a variable of groups in country.ini 
        e.g. 
	--------
	[NO]
        Name=Norway
        Alpha2=NO
        Alpha3=NOR
        IDC=47
        --------
	The 'filter' can be 'Name' or 'Alpha2' or 'Alpha3' or 'IDC'
	
*Example:
1.
  {def $all_country_list=fetch( 'content', 'country_list' )}
      {$all_country_list|attribute(show)}

  will show all countries

2.
{def $country=fetch( 'content', 'country_list', hash( 'filter', 'Name', 'value', 'Norway' ) )}
    {$country|attribute(show)}

  will show:

  Attribute Type    Value
  Name	    string 'Norway'
  Alpha2    string 'NO'
  Alpha3    string 'NOR'
  IDC       string  47