reset if_name to NULL when done, rework ex_cfile to avoid goto's
tree6bc7b73eb0b6ed61fca574f00d53f92b2d3231c9
-rw-r--r-- 7092 README
drwxr-xr-x - common
drwxr-xr-x - docs
drwxr-xr-x - ex
drwxr-xr-x - vi