Euro zone saw winter recession, more challenges aheadEvotec tops STOXX 600 after Citigroup upgradeTelecoms dragged by Vodafone sharesSTOXX 600 flat, FTSE 100 down 0.3%June 8 (Reuters) - European shares were subdued on Thursday as rate-sensitive technology shares and consumer staples slipped on expectations of further interest rate hikes by major central banks, while a sharp slide in Vodafone shares weighed on the telecoms sector.The pan-European STOXX 600 index (.STOXX) was flat, with the rate-sensitive technology sector (.SX8P) down 0.3%.Britain's FTSE 100 (.FTSE) led losses among regional peers, with export-heavy consumer...