Content in /etc/default/locale not correct for zh and pt locales

[jiaowen520li]

In /target/etc/default/locale, LANG is expected to be set to zh_CN.UTF-8 when the user chose Chinese (simplified), and localechooser takes the 5th row of the file named languagelist for zh and pt locales, which is error-prone (it's zh_CN:zh), and the 4th row should be used instead (zh_CN.UTF-8).

Original description
=======================================
Configuration:
PC: HP-Pavilion-Sleekbook-15-PC
OS: UK15.10-0614-Daily-amd64&i386

Installed simplified chinese by default. The description of the installed system is almost entirely in English.

安装时语言默认选择的“中文(简体)”进行，Live模式以及整个安装过程的语言描述均正常显示的中文，可安装后的系统几乎全部显示的英文(包括登录界面及进入后的系统)。只有UK团队研发应用以及部分应用的个别界面显示的中文。

[jiaowen520li (jiaowen520li)]

This bug still exists in UK15.10-0622-Daily-amd64&i386.

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1465530

[jiaowen520li (jiaowen520li)]

This bug still exists in UK15.10-0714-Daily-amd64&i386.

[jiaowen520li (jiaowen520li)]

This bug still exists in UK15.10-0726-Daily-amd64&i386.

[jiaowen520li (jiaowen520li)]

This bug still exists in UK15.10-0730-Daily-amd64&i386.

[jiaowen520li (jiaowen520li)]

This bug still exists in UK15.10-0823-Daily-amd64&i386.

[jiaowen520li (jiaowen520li)]

This bug still exists in UK15.10-0916-Daily-amd64&i386.

[jiaowen520li (jiaowen520li)]

This bug still exists in UK15.10-0924.1-Daily-amd64&i386.

[zhangchao (zctgbhu)]

ubiquity use localechoose 2.65ubuntu1 in 15.10.
I use localechoose 2.49ubuntu5 Instead of 2.65ubuntu1 in 15.10，the the installed system is right。

[Mathieu Trudel-Lapierre (cyphermox)]

This is broken in localechooser itself; it's broken if you install with d-i rather than ubiquity, so it needs to be fixed there too.

[Launchpad Janitor (janitor)]

This bug was fixed in the package localechooser - 2.65ubuntu2

---------------
localechooser (2.65ubuntu2) wily; urgency=medium

  * Properly handle Portugese and Chinese special-cases for LANG and LANGUAGE:
    the format of languagelist has changed a bit so the cut commands need to
    be updated accordingly. (LP: #1465530)

 -- Mathieu Trudel-Lapierre <email address hidden> Mon, 19 Oct 2015 11:07:05 +0100

[Mathieu Trudel-Lapierre (cyphermox)]

Opps, this should have been closed for the ubiquity task as well; it's fixed in all the packages already.