efl, e-wm: add a quick sed fix for e builds using system include paths

efl, e-wm: add a quick sed fix for e builds using system include paths
- This is not likely to affect anyone except 64-bit linux users who have multiple files files
-- This definately affects Gentoo linux on amd64. It has a stub header which includes a 386 or x86_64 depending on defines. However, since OE normally compiles for non-x86 this header actually includes nothing and stops the compile altogether due to missing typedefs and prototypes.