frame.c (start_fde_sort, [...]): New functions for fast sorting of an FDE array.

        * frame.c (start_fde_sort, fde_split, heapsort, fde_merge,
        end_fde_sort): New functions for fast sorting of an FDE array.
        (fde_insert): Simplified.
        (add_fdes): Change argument list.
        (frame_init): Use the new functions.

From-SVN: r18345