Added segment library. Use (g) at home to manage all segments everywhere.

Example:

    Score manager - example scores

        1: Blue Example Score (2013)
        2: Étude Example Score (2013)
        3: Red Example Score (2013)

        scores - new (new)

    > g

    Score manager - segment library

        1: segment 01 (Blue Example Score)
        2: segment 02 (Blue Example Score)
        3: segment 01 (Red Example Score)
        4: segment 02 (Red Example Score)
        5: segment 03 (Red Example Score)
        6: segment 01 (Betörung)
        7: test chunk (Las manos mágicas)
        8: a1 (Traiettorie inargentate)
        9: a2 (Traiettorie inargentate)
        10: a3 (Traiettorie inargentate)
        11: a baseclass (Traiettorie inargentate)
        12: b1 (Traiettorie inargentate)
        13: b2 (Traiettorie inargentate)
        14: b3 (Traiettorie inargentate)
        15: d1 (Traiettorie inargentate)
        16: insert 1 (Traiettorie inargentate)
        17: insert 2 (Traiettorie inargentate)
        18: insert 3 (Traiettorie inargentate)
        19: insert 4 (Traiettorie inargentate)
        20: insert 5 (Traiettorie inargentate)
        21: rainfall (Traiettorie inargentate)
        22: sand (Traiettorie inargentate)
        23: segment baseclass (Traiettorie inargentate)

        all segments - lilypond file - interpret (lyi)
        all segments - make module - interpret (mmi)
        all segments - pdf - open (pdfo)
        all segments - pdf - version (pdfs)

        segments - new (new)

    > q