fix test for t/xt/lib/blib to only trigger on directories
-rw-r--r-- .gitignore
-rw-r--r-- Changes
-rw-r--r-- Makefile.PL
drwxr-xr-x lib
drwxr-xr-x maint
drwxr-xr-x t
drwxr-xr-x xt