reverted changes from revision 3878. Object plug-in internals must not be

2008-03-05  Hans Breuer  <hans@breuer.org>

	* objects/standard/(bezier|polyline|zigzagline).c : reverted changes
	from revision 3878. Object plug-in internals must not be made public.
	Also the way it was done was not portable.
	* objects/standard/(bezier|polyline|zigzagline).h : deleted
	* objects/custom_lines/custom_linetypes.c : almost complete rewrite 
	using only public APIs
	* objects/custom_lines/custom_lines.c
	  objects/custom_lines/custom_linetypes.h : custom_linetypes_init();
	not any longer necessary.
	* objects/standard/Makefile.am objects/custom_lines/Makefile.am 
	  objects/makefile.msc : adapted (reverting the tricks to make
	'make distcheck' pass


svn path=/trunk/; revision=3899