2008-04-23  Johannes Singler  <singler@ira.uka.de>

        * include/parallel/quicksort.h: Reformat,
        (parallel_sort_qs): Do not pass number of elements.
        * include/parallel/balanced_quicksort.h: Reformat,
        (parallel_sort_qsb): Do not pass number of elements.
        * include/parallel/tags.h:
        Introduce new tags for compile-time choice.
        * include/parallel/merge.h:
        (parallel_merge_advance):Beautified.
        * include/parallel/algo.h: Reformatting (spaces for tabs)
        New sort and stable_sort variants, corresponding to the tags.
        * include/parallel/sort.h:
        New sort and stable_sort variants, corresponding to the tags.
        Changed determining the desired number of threads.

From-SVN: r134582