How to Handle the Three Newest Additions to the /usr/ports/CHANGES?

[Bob Perry]

Just cvsup'd my system for the weekend and found three additions
to the /usr/ports/CHANGES file.  They referenced a replacement of
the XFREE86_VERSION variable by the X_WINDOW_SYSTEM variable,
a big update to PHP ports and bsd.php.mk to add more flexibility  plus 
an announcement that "OpenLDAP version 2.2 is now the default..."

I'm still learning FreeBSD and deal with issues as they come up.   I
remember reading postings regarding the XFree86 issue but thought
I had the option to leave well enough alone.  Maybe not.

Not sure I understand fully what the other two are all about yet.  Looks
like I have a long weekend ahead of me.  Think I'll postpone the
portupgrade until I research these changes further.  Is there more
detail provided somewhere on these three changes?

Thanks,
Bob Perry

-- 
I've learned that whatever hits the fan will not be evenly
distributed.

FreeBSD 4.9-RELEASE-p2 #0