jPicEdt Code

Added support for draw-with-center-fixed for parallelograms and ellipses

Added support for smooth-coeffs editing

Made CloseCurveAction undoable (bug fix)

Moved PEAction's dedicated to converting from EditorKit to PicSmoothPolygon

Added algorithms for SQUARE and CENTER_FIXED constraints

Added getDisplayName().

Added override for method remove() so as to work out bug when removing
listeners.

Added quotes (useful for directories containing whitespaces)

Changed script generation (createScript) for Windows so as to work out
possible issues on XP.

Bug fix regarding automatic computing of page format and bounding box.
Added new attributes to the jpic XML tag in order to save bounding box
information.