MFC r310160
retain cc.4.gz man page for Chelsio T6 NICs
This man page was removed in r225583 when cc.4 was renamed to mod_cc.4
With reintroduction of cc.4 "make installworld; make delete-old" was
no longer convergent.
^ commit message
This was generated with "svn merge -c310160 ^/head".
I plan to commit this on Monday evening.
matthew: do I need additional approvers for this?