Added a library dependency graph for libcastortape.so to the tape documentation

castor/tape/doc/dependency_diagrams/README

+How to generate collaboration diagrams from the source in this directory
+========================================================================
+
+1. Install dot by installing the Graphviz package.  Instructions can
+   be found here:
+
+   http://www.graphviz.org
+
+2. Run the helper script generatesvg.sh located in this directory

castor/tape/doc/dependency_diagrams/castor_library_dependencies.dot

+digraph castor_library_dependencies {
+rankdir=LR;
+node [shape = oval];
+edge [weight = 1];
+castortape   -> castordlf
+castortape   -> castorvmgr
+castordlf    -> castorcommon
+castorvmgr   -> castorupv
+castorvmgr   -> castorcommon
+castorupv    -> castorcommon
+castortape   -> castorcommon
+castorcommon -> uuid
+}

castor/tape/doc/dependency_diagrams/generatesvgs.sh

+#!/bin/sh
+
+if test "x$CASTOR_SRC" = x; then
+  echo "Error: The environment variable CASTOR_SRC is not set"
+  echo
+  echo "CASTOR_SRC should be the full path to the CASTOR source code"
+  echo
+  echo "    export CASTOR_SRC=/usr/local/src/CASTOR_SVN_CO/trunk"
+  echo
+  exit -1
+fi
+
+if test ! -d $CASTOR_SRC; then
+  echo "Error: The directory specified by CASTOR_SRC does not exist"
+  echo
+  echo "CASTOR_SRC=\"$CASTOR_SRC\""
+  echo
+  exit -1
+fi
+
+DEPENDENCY_DIR="$CASTOR_SRC/castor/tape/doc/dependency_diagrams"
+
+if test ! -d $DEPENDENCY_DIR; then
+  echo "Error: The following directory does not exist"
+  echo
+  echo "\"$DEPENDENCY_DIR\""
+  echo
+  exit -1
+fi
+
+which dot > /dev/null
+if test $? -ne 0; then
+  echo "Error: The dot command is not on the path"
+  echo
+  exit -1
+fi
+
+DOTS=`ls $DEPENDENCY_DIR/*.dot`
+
+for DOT in $DOTS; do
+  SVG=`echo $DOT | sed 's/\.dot$/.svg/'`
+
+  echo "Generating $SVG"
+
+  if test ! -f $DOT; then
+    echo "Error: The following dot file does not exist:"
+    echo
+    echo "\"$DOT\""
+    echo
+    exit -1
+  fi
+
+  dot -T svg $DOT > $SVG
+done
+
+exit