File::Glob: Drop dependency on given/when
Porting/checkpodencoding.pl: Drop dependency on smartmatch
Porting/core-cpan-diff: Drop dependency on smartmatch
t/re/regexp_unicode_prop.t: Drop dependency on given/when
t/porting/dual-life.t: Drop dependency on smartmatch
Make smartmatch, given & when experimental
Silence "smartmatch is experimental" warnings in autodie