Ensured that EWF  compiles with 7.2

(note about ecf version
   1-10-0 void_safety="all" <-->  1-11-0 void_safety="transitional"
   1-10-0 void_safety="all" <---  1-11-1 void_safety="all"
)
Improved Unicode support.
improve file system handler to ignore .* *.swp *~ or using FUNCTION to compute the ignore behavior