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* Fixed many checkstyle problems.
* Updated xmlgraphics-commons-1.3svn.jar to include changes to TextHandler


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Adds generic structures in PDF so it is possible to embed external PDF documents, for example to support PDF files in fo:external-graphic for PDF output. See also: http://mail-archives.apache.org/mod_mbox/xmlgraphics-fop-dev/200708.mbox/%3c20070806165027.5C59.DEV@jeremias-maerki.ch%3e
I tried to keep the changes on the API of the PDF library minimal but there could still be some incompatibilities for anyone who uses it separately.

This also adds support for dynamically registering an image handler. That's just a temporary solution until the image package redesign is done. But it works.

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* Additional code cleanup: removal of unused imports (mainly in the fo.flow package)



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This patch ports the 0.20.5 CCITTFaxDecode filter functionality and its support
of direct embedding on certain TIFF images to the trunk.
It also cleans up some of the image handling with respect to consistent closing
of the input stream to avoid dangling open files.
Submitted by: Manuel Mall <mm.at.arcus.com.au>

Changes to the patch:
Fixed a small problem with the NullFilter in the PDF library.
Used tiff_group4.tiff in external-graphic-tiff.xml.

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I've added a NullFilter so you can explicitly disable all active filters. Specify "null" as filter in the Avalon Configuration.
DCTFilter now descends from NullFilter because it is ATM only a passive filter.


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Filters have a new method for returning a FilteredOutputStream for the new on-the-fly stream output.


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Some general checkstyle fixing


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can be cached
Submitted by:	Paul Reavis <preavis@partnersoft.com>


git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@194841 13f79535-47bb-0310-9956-ffa450edef68

Submitted by:	Eric Dalquist ebdalqui@mtu.edu
Reviewed by:	Keiron


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