ICU-12738 ICU4C BRS, update readme (mention new license, additional changes, future requirement changes)

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Peter Edberg 2016-09-29 01:42:55 +00:00
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<p class="note only-rc">This is a release candidate version of ICU4C.
It is not recommended for production use.</p>
<p>Last updated: 2016-Sep-27<br/>
<p>Last updated: 2016-Sep-28<br/>
Copyright &copy; 2016 and later: Unicode, Inc. and others. License &amp; terms of use:
<a href="http://www.unicode.org/copyright.html">http://www.unicode.org/copyright.html</a><br/>
Copyright &copy; 1997-2016 International Business Machines Corporation and others.
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<h2><a name="News" href="#News" id="News">What is new in this
release?</a></h2>
<h3>New License</h3>
<p>This is the first release of ICU since the project
<a href="http://blog.unicode.org/2016/05/icu-joins-unicode-consortium.html">joined
the Unicode Consortium</a>. The license has changed to the
<a href="http://www.unicode.org/copyright.html#License">Unicode license</a>
(which is similar to the ICU 1.8.1-57 license).</p>
<h3>Layout Engine Removed</h3>
<p>The LayoutEngine was deprecated in ICU 54 and has now been removed.
see <a href='http://userguide.icu-project.org/layoutengine'>the
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compatibility, but have no effect.
</p>
<h3>Changes in CLDR 30 data</h3>
<ul>
<li>For some combinations of numbering system (arab, arabext, latn) and/or locale
(ar, fa, he), there were changes to the bidirectional control characters used
with certain symbols (percent, minus, plus), and changes to number patterns
(currency and/or percent, including addition of bidirectional control
characters in some cases).</li>
<li>The bidirectional controls used for such purposes now include U+061C ARABIC
LETTER MARK (ALM), which requires use of the bidirectional algorithm from
Unicode 6.3 or later.</li>
<li>The time separator for Norwegian locales (nb, nn) was changed to be :
throughout.</li>
<li>For more information on CLDR 30 changes, see
<a href="http://cldr.unicode.org/index/downloads/cldr-30">CLDR 30 download
page</a>.</li>
</ul>
<h3>Windows build changes</h3>
<p>Windows builds using Visual Studio now require Visual Studio 2015; otherwise you can
use cygwin or similar to build for Windows.</p>
<h3>API Changes</h3>
<p>See the <a href="APIChangeReport.html">API Change Report</a> for a complete
list of APIs added, removed, or changed in this release.</p>
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For more news about this release, as well as late-breaking news, see the
<a href="http://site.icu-project.org/download/57">ICU download page</a>.</p>
<h3>Upcoming changes</h3>
<p>Please note the following changes planned for an upcoming ICU4C release (likely ICU 59):</p>
<ul>
<li>Compiler support for C++11 will be required.</li>
<li>Support for Windows XP will be removed.</li>
</ul>
<h2><a name="RecentPreviousChanges" href="#RecentPreviousChanges" id="RecentPreviousChanges">Changes in recent
previous releases</a></h2>