Integrate changes #8673,8674,8676 from maintperl into mainline,

Integrate changes #8673,8674,8676 from maintperl into mainline,
plus manual tweakage.

Sync the perlfaq2 between mainline and maintperl.

p4raw-link: @8676 on //depot/maint-5.6/perl: ddbaa8e33cb4655fc7b3c652b1d6089f1aad6efb
p4raw-link: @8674 on //depot/maint-5.6/perl: fb0f2086fe1ec258bf5b4f410b4585ba211c15aa
p4raw-link: @8673 on //depot/maint-5.6/perl: 15dd4a322b2ae1ba31fb03063cc940afe2a25dbf

p4raw-id: //depot/perl@8748
p4raw-integrated: from //depot/maint-5.6/perl@8676 'edit in'
	pod/perlfaq2.pod (@8674..)