* Qatar still under boycott from Arab states
(Adds appointment details and context):
DOHA (Reuters) - Qatar named new heads to its giant state-run energy firm and deep-pocketed sovereign wealth fund on Sunday while appointing the CEO of its largest bank as its new trade minister. It was the first government shuffle in Qatar, the world’s top liquefied natural gas producer, since early 2016, but diplomats and analysts said the changes did not represent a significant shift in power.