use ExtUtils::CBuilder if available by reversing broken conditional
-rw-r--r-- .gitignore
-rw-r--r-- ChangeLog
-rw-r--r-- MANIFEST.SKIP
-rw-r--r-- Makefile.PL
drwxr-xr-x lib
drwxr-xr-x opt
drwxr-xr-x t
drwxr-xr-x util