* Document the revision of Speex imported in to Rockbox along with how the import was done.

* Add the Speex license document.
* Whitespace fixes.



git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12266 a1c6a512-1295-4272-9138-f99709370657

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diff --git a/apps/codecs/libspeex/README.rockbox b/apps/codecs/libspeex/README.rockbox
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+Library: libspeex-1.2beta1 (SVN version 12449)
+Imported: 2007-02-10 by Dan Everton
+
+
+This directory contains a local version of libspeex for decoding Ogg/Speex
+audio streams. 
+
+
+LICENSING INFORMATION
+
+Speex is available under the terms of the Xiph.Org variant of the BSD
+license, which is both an open source and free software license. The
+license is described in the COPYING file in this directory.
+
+
+IMPORT DETAILS
+
+The .[ch] files from speex/libspeex/ and speex/include/ were imported 
+into Rockbox.  This includes the test files.
+
+A simple config.h file was added to enable libspeex's fixed-point
+integer-only mode and to specify the endianness of the target CPU. Also,
+ARM specific optimisations were enabled.
+
+Since some parts of Speex still rely on <math.h> functions, a simple 
+include was created to get these parts to compile. Stub functions can be
+found in rockbox.c in this directory.
+