Fix bug 2637
* src/graphics/GraphicsCacheItem.C
(CacheItem::Impl::convertToDisplayFormat): Don't derive the temp
file name from the original file name. This ensures that it is
composed of valid characters only.
* src/graphics/GraphicsConverter.C: remove example script, since it
will get out of date.
(build_script): Copy the original file to a temp file before the
conversion chain starts. This avoids problems with converters that
can't handle ' in filenames.
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@14459
a592a061-630c-0410-9148-
cb99ea01b6c8