Add jhixson to committers-ports.dot and calendar.freebsd

Approved by:	miwi (mentor), kmoore (mentor), araujo (mentor)
Differential Revision:	https://reviews.freebsd.org/D16424

share/misc/committers-ports.dot

@@ -133,6 +133,7 @@ jase [label="Jase Thew\njase@FreeBSD.org\n2012/05/30"]
 jbeich [label="Jan Beich\njbeich@FreeBSD.org\n2015/01/19"]
 jgh [label="Jason Helfman\njgh@FreeBSD.org\n2011/12/16"]
 jhale [label="Jason E. Hale\njhale@FreeBSD.org\n2012/09/10"]
+jhixson [label="John Hixson\njhixson@FreeBSD.org\n2018/07/16"]
 jkim [label="Jung-uk Kim\njkim@FreeBSD.org\n2007/09/12"]
 jlaffaye [label="Julien Laffaye\njlaffaye@FreeBSD.org\n2011/06/06"]
 jmd [label="Johannes M. Dieterich\njmd@FreeBSD.org\n2017/01/09"]
@@ -294,6 +295,7 @@ amdmi3 -> arrowd
 
 antoine -> dumbbell
 
+araujo -> jhixson
 araujo -> lippe
 araujo -> pclin
 araujo -> pgollucci
@@ -471,6 +473,8 @@ jrm -> jwb
 
 junovitch -> tz
 
+kmoore -> jhixson
+
 knu -> daichi
 knu -> maho
 knu -> nobutaka
@@ -556,6 +560,7 @@ miwi -> dhn
 miwi -> farrokhi
 miwi -> fluffy
 miwi -> gahr
+miwi -> jhixson
 miwi -> joneum
 miwi -> jsm
 miwi -> kmoore

usr.bin/calendar/calendars/calendar.freebsd

@@ -402,6 +402,7 @@
 10/30	Olli Hauer <ohauer@FreeBSD.org> born in Sindelfingen, Germany, 1968
 10/31	Taras Korenko <taras@FreeBSD.org> born in Cherkasy region, Ukraine, 1980
 11/03	Ryan Stone <rstone@FreeBSD.org> born in Ottawa, Ontario, Canada, 1985
+11/04	John Hixson <jhixson@FreeBSD.org> born in Burlingame, California, United States, 1974
 11/05	M. Warner Losh <imp@FreeBSD.org> born in Kansas City, Kansas, United States, 1966
 11/06	Michael Zhilin <mizhka@FreeBSD.org> born in Stary Oskol, USSR, 1985
 11/08	Joseph R. Mingrone <jrm@FreeBSD.org> born in Charlottetown, Prince Edward Island, Canada, 1976