[cvs-nhc98] patch applied (hat): Lex a continuous series of underscores as a single lexeme.

Wed Jun 30 05:29:28 PDT 2004 malcolm * Lex a continuous series of underscores as a single lexeme. M ./src/compiler98/LexLow.hs -1 +1 M ./src/compiler98/LexPre.hs -1 +1