Undo some silly local changes so we can pull

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+Building cdec with the scons build system:
+
+While we don't build all components of cdec under scons (yet),
+scons makes things much simpler and reliable. Currently,
+building cdec with scons is experimental.
+
+Step-by-step:
+1) Obtain a Python V2.4 or later (you probably already have this)
+2) Download and install Scons v2.0+ from http://www.scons.org/download.php
+   $ wget http://prdownloads.sourceforge.net/scons/scons-2.0.1.tar.gz
+   $ tar -xvzf scons-2.0.1.tar.gz
+   $ cd scons-2.0.1
+   $ python setup.py build
+   $ sudo setup.py install #(if you have root)
+   $ setup.py install --home=~/prefix #(to install to a user-space prefix instead)
+   
+3) Run scons. Some examples:
+   $ scons #(just build the decoder)
+   $ scons -j16 #(build using 16 cores)
+   $ scons -h #(get help)
+   $ scons --with-boost=~/prefix #(use ~/prefix as the boost directory)