Adding lost instruction for compiling libmad library.

INSTALL.libmad

+INSTALL file for libmad, an integer based MPEG 1,2,3 audio decoder library
+
+
+The mad plugin/builtin of VideoLan Client (vlc) uses an external library called libmad.
+
+Before compiling mad support into vlc the library must be installed first. The following
+text will explain howto compile and install libmad and mad plugin/builtin.
+
+
+Where to find libmad
+=====================
+
+Libmad can be found at: http://www.mars.org/home/rob/proj/mpeg/
+and is part of the mad distribution.
+
+
+Configuring libmad
+=====================
+
+Goto to the libmad subdirectory and run configure..
+
+A typical way to configure libmad as static library is:
+
+   ./configure --prefix=/usr --enable-static
+
+A typical way to configure libmad as shared library is:
+
+   ./configure --prefix=/usr --enable-shared
+
+See `./configure --help' for more information.
+
+
+Building libmad
+==================
+
+Once configured, run `make' to build libmad.
+
+
+Installing libmad
+====================
+
+You can install libmad as root by typing:
+
+   make install
+
+Libmad will be installed into the directory used at the configure stage.
+In our example this is /usr (libaries will go in /usr/lib/, include files
+will go in /usr/include).
+
+
+Configuring mad plugin
+=========================
+
+If libmad is installed in /usr (ie. you have /usr/include/mad.h and /usr/lib/libmad.a),
+then you just need --enable-mad --with-mad=/usr.
+
+   make distclean; ./configure --prefix=/usr --enable-fb --enable-dsp --disable-sdl \
+	--enable-x11 --disable-xvideo --enable-mad --with-mad=/usr
+
+If sdl source code is installed, then --enable-sdl can also be used.	
+	
+   make distclean; ./configure --prefix=/usr --enable-fb --enable-dsp --disable-sdl \
+	--enable-x11 --enable-xvideo --enable-mad --with-mad=/usr
+
+	
+Building mad plugin
+=====================
+
+Once configured, run `make' to build vlc with mad support.
+
+
+Installing mad
+==================
+
+You can install vlc as root by typing:
+
+   make install
+
+