Integrate:

Integrate:
[ 18946]
Integrate from maint-5.8/macperl:
[ 18937]
Various MacOS portability fixes for tests

[ 18938]
File::Spec::Unix method should be called on $self

[ 18939]
lib.pm:_get_dirs() should use $_[0], not $_

[ 18940]
Update MacOS for new configpm

[ 18941]
Update MacOS build
Update Makefile for new source files,
update test script, add additional symbol for APItest
p4raw-link: @18946 on //depot/maint-5.8/perl: 494df11159c23652339c95affadb99da70ef89e6
p4raw-link: @18941 on //depot/maint-5.8/macperl: 9b3df31c299856a4cb17c1b4a9c403df0a69ec28
p4raw-link: @18940 on //depot/maint-5.8/macperl: 5d97ba7550864e5eaacd84839be0d01c212a6d00
p4raw-link: @18939 on //depot/maint-5.8/macperl: be568d45c1392c31a2787cdaf2ab37fb4a91ced1
p4raw-link: @18938 on //depot/maint-5.8/macperl: efc910e725c427d20af16b2fdf1d43228fecfc02
p4raw-link: @18937 on //depot/maint-5.8/macperl: bbcece98349dade0635a793d66ae4e883c9097d6

p4raw-id: //depot/perl@18951
p4raw-integrated: from //depot/maint-5.8/perl@18950 'copy in'
	ext/POSIX/t/taint.t t/op/stat.t (@17645..)
	lib/Unicode/Collate/t/index.t lib/Unicode/Collate/t/test.t
	lib/lib_pm.PL t/op/mkdir.t (@18080..) ext/Filter/t/call.t
	lib/charnames.t t/op/taint.t t/run/switchI.t (@18458..)
	lib/File/Spec/Unix.pm (@18466..) t/io/crlf.t (@18638..)
	ext/Digest/MD5/t/files.t (@18743..) t/op/method.t (@18850..)
	t/pod/testp2pt.pl (@18890..) t/op/sprintf.t (@18911..)
	t/op/recurse.t (@18922..)
p4raw-branched: from //depot/maint-5.8/perl@18946 'branch in'
	macos/MacPerlTests.cmd macos/Makefile.mk macos/configpm
	macos/macperl.sym