use client geometry for calculations in x11 ConfigureRequest handler
use client geometry for calculations in x11 ConfigureRequest handler

the values requested by the client will be based on its geometry and not
the geometry of the frame. using the frame geometry here results in windows
moving ↘ based on the top/left frame sizes

fix T2912

tasn/enlightenment,tasn/enlightenment,rvandegrift/e,rvandegrift/e,tasn/enlightenment,rvandegrift/e