[ImagePNG] FIX: Library linking in debug configuration under MSVS
[ImagePNG] FIX: Library linking in debug configuration under MSVS

Libraries for debug configuration have suffix "d". For that reason release and
debug configurations must have different pragmas for linking libpng and zlib
under MSVS.

Anatoscope/sofa,Anatoscope/sofa,FabienPean/sofa,FabienPean/sofa,Anatoscope/sofa,Anatoscope/sofa,FabienPean/sofa,Anatoscope/sofa,Anatoscope/sofa,FabienPean/sofa,FabienPean/sofa,FabienPean/sofa,FabienPean/sofa,FabienPean/sofa,Anatoscope/sofa,FabienPean/sofa,Anatoscope/sofa,FabienPean/sofa,Anatoscope/sofa