Add myself and mentorship status to committers files.

This was not done right when I got my ports bit, so do them both in one commit:

my ports mentors were az@ and vsevolod@ and my src mentors are avg@ and mav@

Approved by:	avg (mentor)

share/misc/committers-ports.dot

@@ -99,6 +99,7 @@ edwin [label="Edwin Groothuis\nedwin@FreeBSD.org\n2002/10/22"]
 ehaupt [label="Emanuel Haupt\nehaupt@FreeBSD.org\n2005/10/03"]
 eik [label="Oliver Eikemeier\neik@FreeBSD.org\n2003/11/12"]
 erwin [label="Erwin Lansing\nerwin@FreeBSD.org\n2003/06/04"]
+eugen [label="Eugene Grosbein\neugen@FreeBSD.org\n2017/03/04"]
 farrokhi [label="Babak Farrokhi\nfarrokhi@FreeBSD.org\n2006/11/07"]
 feld [label="Mark Felder\nfeld@FreeBSD.org\n2013/06/25"]
 fjoe [label="Max Khon\nfjoe@FreeBSD.org\n2001/08/06"]
@@ -290,6 +291,8 @@ asami -> obrien
 avilla -> jhale
 avilla -> rakuco
 
+az -> eugen
+
 bdrewery -> dbn
 bdrewery -> sbruno
 bdrewery -> trociny
@@ -656,6 +659,8 @@ thierry -> riggs
 tmclaugh -> itetcu
 tmclaugh -> xride
 
+vsevolod -> eugen
+
 wen -> cs
 wen -> culot
 wen -> pawel

share/misc/committers-src.dot

@@ -162,6 +162,7 @@ emaste [label="Ed Maste\nemaste@FreeBSD.org\n2005/10/04"]
 emax [label="Maksim Yevmenkin\nemax@FreeBSD.org\n2003/10/12"]
 eri [label="Ermal Luci\neri@FreeBSD.org\n2008/06/11"]
 erj [label="Eric Joyner\nerj@FreeBSD.org\n2014/12/14"]
+eugen [label="Eugene Grosbein\neugen@FreeBSD.org\n2017/09/19"]
 fabient [label="Fabien Thomas\nfabient@FreeBSD.org\n2009/03/16"]
 fanf [label="Tony Finch\nfanf@FreeBSD.org\n2002/05/05"]
 fjoe [label="Max Khon\nfjoe@FreeBSD.org\n2001/08/06"]
@@ -386,6 +387,7 @@ andrew -> manu
 anholt -> jkim
 
 avg -> art
+avg -> eugen
 avg -> pluknet
 avg -> smh
 
@@ -650,6 +652,7 @@ markm -> jasone
 markm -> sheldonh
 
 mav -> ae
+mav -> eugen
 
 mdf -> gleb