fixed, xbmc does not build on hardy due to outdated libmodplug, updat…

…e README.ubuntu to build it

git-svn-id: https://xbmc.svn.sourceforge.net/svnroot/xbmc/trunk@27871 568bbfeb-2a22-0410-94d2-cc84cf5bfa90

README.ubuntu

@@ -61,6 +61,14 @@ In this case you will have to manually compile the latest version.
    # make
    # sudo make install
 
+On 8.04 and older versions, libmodplug is outdated and thus XBMC will not compile properly.
+In this case you will have to manually compile the latest version. Luckly the source is
+already in the xbcm source code tree.
+   # cd lib/libmodplug
+   # ./configure --prefix=/usr
+   # make
+   # sudo make install
+
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 3.2. Use a single command to get all build dependencies
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