Fixed a NPE when a mask is null in BitmapImage.java
Add support for properly encoding binary data as a hexadecimal string object (including encryption).
Adjust palette generation for indexed bitmaps to work correctly with encryption.

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/branches/Temp_ImagePackageRedesign@611133 13f79535-47bb-0310-9956-ffa450edef68

Adjusted to use the Commons' version.
Batik-dependent plugins remain but will eventually need a different resting place.

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/branches/Temp_ImagePackageRedesign@605479 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/branches/Temp_ImagePackageRedesign@603250 13f79535-47bb-0310-9956-ffa450edef68

Reimplemented transparency support (for now only for ImageIO loader and PDF output)
ImageIO preloader passes the already loaded metadata to the ImageIO loader through the "custom objects" so it doesn't have to load them again.
PDF library: Corrected the naming of the method indicating the "bits per component" (bits per component != bits per pixel)
PDF library: Added a method which lets a user override values in an XObject's dictionary after the major values have been set (useful not to make the PDFImage interface more complicated).
PDF library: Support for gray transparent colors.
PDF library: Added a convenience class for alpha channel bitmaps (AlphaRasterImage)

Integration of the new image package into the PDFRenderer (currently supports all previous embedding methods except deprecated EPS embedding and CCITT embedding, now supports even more transparency options than before)



git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/branches/Temp_ImagePackageRedesign@602032 13f79535-47bb-0310-9956-ffa450edef68