By Simon Jessop and Valerie Volcovici SHARM EL-SHEIKH, Egypt (Reuters) – A deal struck at the COP27 climate talks in Egypt calls for an overhaul of the post-World War Two international financial architecture that has guided three generations of development aid but is struggling to fund the needs of a warmer planet. As the impacts of climate change worsen, delegates at the U.N. summit that ended at the weekend pressed for reform to speed up the flow of funding to developing countries – to help them cut emissions and cope with the floods or wildfires they are already experiencing. The final COP2…