Update djview4 to 4.5.
Based on PR#43712 from Ryo ONODERA.

NEW IN VERSION 4.3
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- Undo/Redo
- New translations (german,czech)
- Fixed double free bug in plugin mode.

NEW IN VERSION 4.4
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- Full session management under X11.
- Added advanced feature check box.
- Added advanced command to copy urls, outline, etc.
- New translation (russian)
- History in the find dialog.
- Option to display hidden text in status bar.
- Option to display the first page alone in side-by-side mode.
- Option to display side-by-side in right-to-left mode.
- Drag'n drop files into the viewer.
- Support for Lizardtech's plugin option -showposition.

NEW IN VERSION 4.5
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- Fixed priority of annotation options.
- Fixed plugin for recent versions of gcc.
- Added showposition in advanced option copyUrl.
- New advanced mode to display hidden text.
- Lens display annotations and hidden text.
- Nsdejavu can use the XEmbed protocol when available.
- Plugin is scriptable from JavaScript.

(obache)