add UTF8 rtest case from b993 support charset=utf8 as synonym for charset="utf-8" add charset=latin1 to latin1 examples and rtest cases
add UTF8 rtest case from b993
support charset=utf8 as synonym for charset="utf-8"
add charset=latin1 to latin1 examples and rtest cases

tkelman/graphviz,MjAbuz/graphviz,kbrock/graphviz,BMJHayward/graphviz,ellson/graphviz,pixelglow/graphviz,tkelman/graphviz,BMJHayward/graphviz,jho1965us/graphviz,jho1965us/graphviz,pixelglow/graphviz,jho1965us/graphviz,jho1965us/graphviz,tkelman/graphviz,pixelglow/graphviz,MjAbuz/graphviz,kbrock/graphviz,BMJHayward/graphviz,ellson/graphviz,kbrock/graphviz,ellson/graphviz,tkelman/graphviz,jho1965us/graphviz,BMJHayward/graphviz,jho1965us/graphviz,kbrock/graphviz,MjAbuz/graphviz,pixelglow/graphviz,tkelman/graphviz,MjAbuz/graphviz,kbrock/graphviz,BMJHayward/graphviz,MjAbuz/graphviz,BMJHayward/graphviz,pixelglow/graphviz,pixelglow/graphviz,pixelglow/graphviz,BMJHayward/graphviz,jho1965us/graphviz,pixelglow/graphviz,pixelglow/graphviz,MjAbuz/graphviz,ellson/graphviz,kbrock/graphviz,pixelglow/graphviz,ellson/graphviz,tkelman/graphviz,jho1965us/graphviz,kbrock/graphviz,kbrock/graphviz,tkelman/graphviz,tkelman/graphviz,jho1965us/graphviz,ellson/graphviz,pixelglow/graphviz,BMJHayward/graphviz,jho1965us/graphviz,MjAbuz/graphviz,kbrock/graphviz,jho1965us/graphviz,ellson/graphviz,ellson/graphviz,BMJHayward/graphviz,ellson/graphviz,MjAbuz/graphviz,tkelman/graphviz,ellson/graphviz,kbrock/graphviz,tkelman/graphviz,tkelman/graphviz,MjAbuz/graphviz,MjAbuz/graphviz,BMJHayward/graphviz,kbrock/graphviz,ellson/graphviz,BMJHayward/graphviz,MjAbuz/graphviz