KUALA LUMPUR, Oct 29 (Reuters) - Temasek Ekslusif, a wholly-owned unit of Malaysian developer Gamuda Bhd GAMU.KL , will raise up to 1 billion Malaysian ringgit with Islamic bonds, ratings agency RAM Ratings said in a statement on Wednesday.Temasek Ekslusif plans to establish a 30-year medium term notes programme and a 7-year commercial papers programme, to RAM assigned a rating of AA3.RAM said Gam