iChanges:
    Prompt whether MKL Dynamic thread control is enabled.
    Feature function transformation now supports (3rd order polynomial)
    CUBIC transformation.
    Serious memory optimization for feature function based parser.
    Feature function based parser is almost 2.5x faster now (40
    sentences/sec to 100 sentences/sec)
    Fixed minor parser rate and elapsed time prompt errors.
    vector structure is prepared to keep track of max size and current
    size seperately (incomplete).
    vconcat now assumes preallocation and no longer calls vector_resize
    for performance reasons.
    vconcat_arr is new function to concat a C array into vector object.
    transformed vectors no longer has proper coefficients.
Changes:
    Documentation and version string
Merge branch 'release/0.9.9' into develop