refers to and add extra '#' comment characters at the beginning of two
lines that started with TABs, to avoid warnings like:
"/etc/make.conf", line 128: Unassociated shell command "# If set, you might need to adopt your"
"/etc/make.conf", line 129: Unassociated shell command "# nsswitch.conf(5) and remove `nis' entries."
PR: misc/89423
Submitted by: Scot W. Hetzel