integrate cfgperl changes#6261..6266 into mainline

integrate cfgperl changes#6261..6266 into mainline

p4raw-link: @6266 on //depot/cfgperl: a009ce76c9b4ddbde44a58eab3fe27d331cf27fe
p4raw-link: @6261 on //depot/cfgperl: 27d76ecff97d0a9449f569d789504cc8b69a6d01

p4raw-id: //depot/perl@6363
p4raw-integrated: from //depot/cfgperl@6362 'copy in' README.epoc
	epoc/createpkg.pl epoc/epocish.c (@5586..) epoc/epocish.h
	t/comp/require.t (@5639..) cygwin/Makefile.SHs (@6096..)
	ext/POSIX/POSIX.pm (@6140..) hints/bsdos.sh (@6156..)
	epoc/config.sh (@6168..) ext/POSIX/POSIX.xs (@6198..)
p4raw-integrated: from //depot/cfgperl@6265 'copy in'
	ext/POSIX/POSIX.pod (@5586..)
p4raw-integrated: from //depot/cfgperl@6263 'copy in' doop.c (@6256..)
p4raw-integrated: from //depot/cfgperl@6261 'merge in' pod/perldiag.pod
	(@6206..) toke.c (@6250..)