Merge from vendor branch TNF:

Merge from vendor branch TNF:
pstoedit, a converter from PostScript and PDF files to
other vector graphic formats, including fig (xfig, transfig),
tgif .obj, DXF (CAD exchange format), PIC (troff), LaTeX2e picture,
and etc.

Some files may not be converted.
International characters may be broken into polylines and splines,
but would be better than nothing.