Initial commit of mpg123-1.29.3

ports/README

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+DISCLAIMER: The contents of the ports directory are included for convenience,
+but they usually contain files contributed by various people, not the core
+mpg123 team. The stuff is not tested by us. In some cases, it's even
+impossible to tell what is really inside. Use at your own risk (well, like
+all Free Software, actually;-).
+
+This directory contains some (contributed) works covering usage and/or building
+of mpg123/libmpg123 from different programming environments. Note that those
+may be a bit outdated (especially when a file is added/removed in libmpg123
+sources); as the team lacks resource to test everything. But in any case,
+the ports can provide a good starting point on the respective platform, to get
+it to work with minimal fuzz.
+
+- cmake: CMake build to get started on non-Unix-like platforms
+- Delphi: mpg123_.pas
+  Unit for linking against libmpg123 (Win32, DLL).
+  ...by Arthur Pires <arthurprs@gmail.com>
+- Sony PSP: Sony_PSP/; building libmpg123 for the PSP (used for the MODO player).
+  ...by Bastian Pflieger <wb@illogical.de>
+- Xcode contains the project file for building and using libmpg123 with
+  Xcode for Mac and iOS (arm and simulator builds). Please add the
+	ports/Xcode folder to the header search path of your project so that 
+	Xcode can find the right mpg123.h and config.h. Then drag the mpg123
+	Xcode project into your own project. Finally in your build target, build
+	phases, add mpg123-ios or mpg123-mac to the libraries to link.