* --autofix
* fix false positive warnings
* quoting check for Makefile variables
* -E/--explain
* check for absolute paths
* check for direct use of /usr/pkgsrc etc.
* check for direct use of *DIR
* in dependency lines check for ../../category/package, not ../package
* ONLY_FOR_PLATFORM => NOT_FOR_PLATFORM
* -Wl,-rpath
* check that PERL5_PACKLIST is a path relative to ${FOO}