skip integrate of problematic change#6230 from cfgperl into mainline

(a later version of File::Spec is already in mainline)

p4raw-link: @6230 on //depot/cfgperl: b4408b2550ef78122084a50276f0f56ab8d9db27

p4raw-id: //depot/perl@6353
p4raw-integrated: from //depot/cfgperl@6230 'ignore' t/lib/filefunc.t
	(@5586..) t/lib/filespec.t (@5753..) lib/File/Spec/Functions.pm
	lib/File/Spec/OS2.pm (@5996..) lib/File/Spec.pm (@6072..)