* new algorithm Rapid Frequency Selective Reconstruction (FSR) added

* fix compiler warning

* applied changes suggested in alalek's review

* fix trailing whitespace

* xphoto: update inpaint() test

* fix pre-processing of error mask

* xphoto: move inpainting FSR algorithm into a separate file

* xphoto: cleanup inpaining documentation

* xphoto: inpainting fsr - avoid uninitialized values