create SPObject factory

Fix "Access to field 'image_out' results in a dereference of a null pointer"

Enable rendering of new filter blend modes (but don't add them to GUI).

Enable rendering of new filter blend modes (but don't add them to GUI).

New CSS blending and compositing modes. Define WITH_CSSBLEND and/or WITH_CSSCOMPOSITE to try out. Note: these new modes are not yet defined to apply to SVG filters in the CSS Compositing and Blending Level 1 or in CSS Filters Level 1 specifications. They are expected to be included in Level 2.

Replacement of unnecessary variables.

Merge Object and subclasses. Merging of SP- and C-classes complete.

Merged FilterPrimitive and subclasses.

Registered classes with new factory. Hkern, Vkern and FeFuncX have to be rewritten, as they aren't real classes.

Added constructors to SP classes.

Prepared exchange of casting macros.

Renamed virtual function names.

Removed function pointers from SPObject and subclasses. Added some missing virtual pads for classes that were hidden by preprocessor macros.

Replaced virtual function call to "build_renderer".

Added "virtual pads" to - SPFilterPrimitive and all subclasses All subclasses of SPObject now have got virtual pads.

Various changes.

More GObject boilerplate reduction

Super duper mega (fun!) commit: replaced encoding=utf-8 with fileencoding=utf-8 in all 1074 Vim modelines. The reason for this is that (a) setting the encoding isn't nice, and (b) Vim 7.3 (with modeline enabled) disallows it and pops up an error whenever you open any file with it ("invalid modeline"). Also corrected five deviant modestrings: * src/ui/widget/dock.cpp and src/ui/widget/dock.h: missing colon at the end * src/ui/dialog/tile.cpp: removed gratuitous second colon at the end * src/helper/units-test.h: removed gratuitous space before a colon * share/extensions/export_gimp_palette.py: missing textwidth=99 That's my geekiest commit yet.

Merge redundant *-fns.h into respective filter headers. Move gaussian blur to filters directory. Blend filter effect.

SPObject c++ification finalized along with the beginning of XML Privatisation tweaks

C++ification of SPObject continued along with the onset of XML Privatisation. Users may checkout [grep -Ir XML Tree *] in the source code and all the places where the XML node/Tree is being used shall be reflected.

Revert recent refactoring changes by johnce because they break the build, which cannot be fixed easily.

SPDocument->Document

Fixed several cases of bad SVG being written from filters

Move filters into their own namespace Inkscape::Filters (from NR::)

Merge from fe-moved