Fix dependency generator:

When the .dep file is scanned during the tree building, it outputs dependencies
in the file order, while when the tree is scanned later, dependencies are
output in alphabetical order. This may eventually lead to a wrong order
at the end. To be sure that both output are the same, just sort
the .dep file before scanning it.

BLFS/libs/func_dependencies

@@ -113,6 +113,7 @@ of ${BOLD}${DepFile%.dep}${OFF}"
         ../xsl/dependencies.xsl ../packages.xml
 
     if [[ -f ${id_of_dep}.dep ]]; then
+      sort ${id_of_dep}.dep -o ${id_of_dep}.dep
       sed -i "1i${rootlink[*]} $count" ${id_of_dep}.dep
       generate_dependency_tree ${id_of_dep}.dep
 # Test return value, in case we exchange dependencies