Add halfwidth accented glyphs

Adieresis, ugrave, eacute, iacute, germandbls, ccedilla, Ccedilla,
Ntilde, ntilde, cent, sterling, oacute, uacute, exclamdown,
questiondown, onehalf, Odieresis, Udieresis, adieresis, edieresis,
idieresis, odieresis, udieresis, acircumflex, ecircumflex, icircumflex,
ocircumflex, ucircumflex, agrave, egrave, aacute, asciitilde, zero.slash