BEIRUT (Reuters) – The Syria branch of the Islamic State in Iraq and the Levant (ISIL) has put fighting on hold in Syria while it brings in weapons seized inside neighboring Iraq, a monitoring group that tracks the violence said on Friday. ISIL, a Sunni Islamist splinter of al Qaeda, has battled rival rebel groups in Syria for months and clashed occasionally with President Bashar al-Assad’s forces. But its fighters appear to hold…