feat(libwfobj.a): added findComment() call
Comment changes
Made addFace() into a public routine as well, so tools can add geometry
Made some useful routines public from readwfobj.c
Eliminated unimplemented declaration
Added interface for transform from pre-parsed words
Added -x option to robjutil to transform .OBJ files
Created robjutil tool to manipulate Wavefront .OBJ files
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