NAIROBI, March 13 (Reuters) – The following company announcements, scheduled economic indicators, debt and currency market moves and political events may affect African markets on Tuesday. – – – – – EVENTS: *RWANDA – The statistics office to release fourth quarter 2017 gross domestic product data. GLOBAL MARKETS Asian stocks stalled on Tuesday as Wall Street shares lost steam, while the dollar sagged on the back of declining U.S. yields. Investors were focused on U.S. inflat