Update DEPENDENCIES file.

Add additional package to install the development packages for libxml2.
This package is needed by some ROOT library which is needed by ALICE.

DEPENDENCIES

@@ -9,6 +9,7 @@ bzip2 gzip unzip tar subversion git
 The following development packages are needed
 
 x11-dev xft-dev xext-dev xpm-dev xmu-dev opengl-dev ncurses-dev
+libxml2-dev
 
 If FairSoft is installed on Linux using the clang compiler suite on
 needs additionaly the following programs
@@ -27,28 +28,31 @@ apt-get install  cmake cmake-data g++ gcc gfortran \
   libxext-dev libxpm-dev libxmu-dev libglu1-mesa-dev \
   libgl1-mesa-dev ncurses-dev curl bzip2 gzip unzip tar \
   subversion git xutils-dev flex bison lsb-release \
-  python-dev libc6-dev-i386
+  python-dev libc6-dev-i386 libxml2-dev
 
 Debian, Ubuntu and other Debian based systems (32bit).
 
 apt-get install  cmake cmake-data g++ gcc gfortran \
   build-essential make patch sed libx11-dev libxft-dev \
   libxext-dev libxpm-dev libxmu-dev libglu1-mesa-dev \
   libgl1-mesa-dev ncurses-dev curl bzip2 gzip unzip tar \
-  subversion git xutils-dev flex bison lsb-release python-dev
+  subversion git xutils-dev flex bison lsb-release \
+  python-dev libxml2-dev
 
 Suse, OpenSuse and other Suse based systems
 
 zypper install cmake gcc gcc-c++ gcc-fortran make patch sed \
   libX11-devel libXft-devel libXpm-devel libXext-devel \
   libXmu-devel Mesa-libGL-devel freeglut-devel ncurses-devel \
   curl bzip2 gzip unzip tar libexpat-devel subversion git \
-  flex bison makedepend lsb-release python-devel
+  flex bison makedepend lsb-release python-devel \
+  libxml2-devel
 
 Fedora, Redhat, Scientific Linuc and other Redhat based systems
 
 yum install cmake gcc gcc-c++ gcc-gfortran make patch sed \
   libX11-devel libXft-devel libXpm-devel libXext-devel \
   libXmu-devel mesa-libGLU-devel mesa-libGL-devel ncurses-devel \
   curl bzip2 libbz2-dev gzip unzip tar expat-devel \
-  subversion git flex bison imake redhat-lsb-core python python-devel
+  subversion git flex bison imake redhat-lsb-core \
+  python-devel libxml2-devel