Delete UserConfig.txt
Change extension to .template for personalized 'UserConfig.txt'
All User*.template to ignore lists.

Conflicts:
	CMakeConfig/UserConfig.txt
	CMakeConfig/UserConfig_pov.template
	CMakeConfig/UserConfig_pov.txt
Added outputFile option to yafaray-xml

Conflicts:
	src/xml_loader/xml-loader.cc
Review code from 'rubdos' patch:
    - set only the file name, the extension is set with parsing 'f' option

Conflicts:
	src/xml_loader/xml-loader.cc
Starting improve bidirectional integrator.
Separate class declaration code to bdpt.h header file for cleanup code.
Try to add news parameters:
    - maxPathLength
    - minPathLength

Conflicts:
	src/integrators/bidirpath.cc
Small mismatch typo on BDPT_H guard
Add 'do_lightImage' variable for test.
Indent some license text.

Conflicts:
	include/yafray_constants.h
	src/integrators/bidirpath.cc