Merge branch 'jc/macports-darwinports'

Makefile in-comment doc update.

* jc/macports-darwinports:
  Makefile: help macOS novices by mentioning MacPorts

Author: gitster

Makefile

@@ -95,7 +95,8 @@ include shared.mak
 # and LDFLAGS appropriately.
 #
 # Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
-# have DarwinPorts installed in /opt/local, but don't want GIT to
+# have DarwinPorts (which is an old name for MacPorts) installed
+# in /opt/local, but don't want GIT to
 # link against any libraries installed there.  If defined you may
 # specify your own (or DarwinPort's) include directories and
 # library directories by defining CFLAGS and LDFLAGS appropriately.