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Description of problem:
The Anaconda and Initial Setup text user interface (TUI) needs to be able to detect if the currently selected language can be correctly rendered with the Linux console. 

Upstream langtable (version >=0.0.34) has the list_scripts() functionality which can be used to perform this by the TUI.

Version-Release number of selected component (if applicable):
0.0.34

How reproducible:
always

Additional info:
Idea about using the list_scripts() functionality by Anaconda and Initial Setup TUI is to list scripts for the currently selected language and only use it if it is one of: 'Latn', 'Cyrl' or 'Grek'. If it is not one of those, the TUI will default to English to prevent displaying unreadable characters to the user.

 http://brewweb.devel.redhat.com/brew/taskinfo?taskID=9513101

Created attachment 1051811 [details]
Add-language-endonym-for-tl.patch

Created attachment 1051812 [details]
Some-translation-fixes-from-CLDR.patch

Created attachment 1051813 [details]
Translation-fix-from-Wikipedia.patch

Created attachment 1051814 [details]
Translation-fix-for-Tagalog-Filipino.patch

Created attachment 1051817 [details]
Translation-fix-from-CLDR.patch

Created attachment 1051818 [details]
Add-sphinx-markup-to-public-functions.patch

Created attachment 1051819 [details]
Add-a-function-list_scripts-to-list-scripts-used-for.patch

New build:

http://brewweb.devel.redhat.com/brew/taskinfo?taskID=9513788

(The build in comment#3 had an unused patch in the source rpm, apart
from that there is no change).

Pushed to rhel-7.2 branch.

Build:  http://brewweb.devel.redhat.com/brew/taskinfo?taskID=9528793

Build from comment#13 added to advisory https://errata.devel.redhat.com/advisory/20412

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2191.html