[dev-context] lang-def.mkiv

Hi, the quotation marks for greek have to be fixed because \greekleftquot doesn’t exist in MkIV. I changed also the symbols from (( to « which is shown on wikipedia. \installlanguage [\s!gr] [\c!spacing=\v!packed, \c!leftsentence=\emdash, \c!rightsentence=\emdash, \c!leftsubsentence=\emdash, \c!rightsubsentence=\emdash, - \c!leftquote=\greekleftquot, - \c!rightquote=\greekrightquot, - \c!leftquotation=\greekleftquot, - \c!rightquotation=\greekrightquot, + \c!leftquote=“, + \c!rightquote=”, + \c!leftquotation=«, + \c!rightquotation=», \c!date={\v!day\space\v!month\space\v!year}, \s!patterns=\s!agr] % ok? Wolfgang