add HPDF_LoadU3DFromMem()

patch by boloden (at) gmail dot com
support huge fonts (patch by Alan W. Irwin)
chmod -x src/hpdf_fontdef_jp.c
master is now 2.4.0dev
large U3D-related patch by Michael Vidiassov

- added some options for the 3D-Annotation:
      - activate Toolbar, Navigation Panel choice
      - allow own Appearance Stream
      - set compression
      - set activation on Page Open ("PO")
- Added set PDF version to 1.7 (therefore small change in encryption)
- added some options for 3DView: Crosssection Dict, changed Node handling for more flexibility, set camera by matrix
- set compression for JavaScript
- Link Annotation added Javascript (therefor Dest was chenged to allow to be nil)
- Widget Annotation implemented to blank some elements for printing (simple overpaint them white while printing)
- added some missing Exports (in .def file for windows)
- removed not correct working function HPDF_3DAnnot_Set3DView
- removed not correct working function HPDF_U3D_LoadU3DFromMem (not the one recently added)
dos2unix
master is now 2.4.0dev
Prevent distance from camera to target from being

.. rounded while setting 3D view
patch by Michail Vidiassov
fix check for devel suffix
point @ buildconf.sh and update docs URL