Let the acquisition rumor mill for SunTrust Banks Inc. begin, again.  On Tuesday, Credit Suisse issued an investor report stating that the Atlanta-based regional giant could be a target for an international bank looking to play in America, numerous media outlets reported.  The rumor mill cranked up earlier this year following a Wall Street Journal report that London-based Barclays was looking to make a deal in the U.S. The nation's seventh largest bank by assets and deposits has long been the subject of takeover rumors, particularly during the current downturn.  The latest report by a Credit Suisse analysts says SunTrust (NYSE: STI) could be a tempting target for an international suitor.  (read more at Atlanta Business Chronicle)