add myself as ports committer, mentor jrm + swills

Approved by:	jrm
Differential Revision:	https://reviews.freebsd.org/D13268

share/misc/committers-ports.dot

@@ -87,6 +87,7 @@ danilo [label="Danilo E. Gondolfo\[email protected]\n2013/09/23"]
 db [label="Diane Bruce\n[email protected]\n2007/01/18"]
 dbaio [label="Danilo G. Baio\n[email protected]\n2017/05/03"]
 dbn [label="David Naylor\n[email protected]\n2013/01/14"]
+dch [label="Dave Cottlehuber\n[email protected]\n2017/09/09"]
 decke [label="Bernhard Froehlich\n[email protected]\n2010/03/21"]
 delphij [label="Xin Li\n[email protected]\n2006/05/01"]
 demon [label="Dmitry Sivachenko\n[email protected]\n2000/11/13"]
@@ -445,6 +446,7 @@ jadawin -> wen
 
 joerg -> netchild
 
+jrm -> dch
 jrm -> jwb
 
 junovitch -> tz
@@ -627,6 +629,7 @@ stas -> araujo
 
 steve -> netchild
 
+swills -> dch
 swills -> feld
 swills -> jmd
 swills -> jrm

usr.bin/calendar/calendars/calendar.freebsd

@@ -127,6 +127,7 @@
 03/26	Jonathan Anderson <[email protected]> born in Ottawa, Ontario, Canada, 1983
 03/27	Josef El-Rayes <[email protected]> born in Linz, Austria, 1982
 03/28	Sean C. Farley <[email protected]> born in Indianapolis, Indiana, United States, 1970
+03/29	Dave Cottlehuber <[email protected]> born in Christchurch, New Zealand, 1973
 03/29	Thierry Thomas <[email protected]> born in Luxeuil les Bains, France, 1961
 03/30	Po-Chuan Hsieh <[email protected]> born in Taipei, Taiwan, Republic of China, 1978
 03/31	First quarter status reports are due on 04/15