TBILISI, Feb 4 (AFP) - An aide to Georgian prime minister Zurab Zhvania, who died apparently after breathing toxic fumes leaked by a faulty heater, committed suicide late Friday, an interior ministry spokesman said. The aide, 32-year-old Georgi Khelashvili, shot himself with a gun in his Tbilisi apartment, the spokesman said. Khelashvili was a member of Zhavania`s staff, working with the pardons commission, the Mze television channel reported. It was not yet clear whether Khelashvili`s suicide was linked to Zhvania`s death. Zhvania, Georgia`s widely respected prime minister seen as the driving force behind market-oriented economic reform in the restive...