Makefile: doc targets should override submake vars with env vars
Makefile: doc targets should override submake vars with env vars

ktkt2009/disco,pombredanne/disco,simudream/disco,pavlobaron/disco_playground,oldmantaiter/disco,pombredanne/disco,discoproject/disco,discoproject/disco,pavlobaron/disco_playground,pombredanne/disco,ErikDubbelboer/disco,seabirdzh/disco,oldmantaiter/disco,simudream/disco,ktkt2009/disco,discoproject/disco,simudream/disco,scrapinghub/disco,pooya/disco,beni55/disco,pooya/disco,ErikDubbelboer/disco,pooya/disco,mozilla/disco,mozilla/disco,pavlobaron/disco_playground,mwilliams3/disco,discoproject/disco,beni55/disco,mwilliams3/disco,ktkt2009/disco,pombredanne/disco,mozilla/disco,oldmantaiter/disco,pavlobaron/disco_playground,simudream/disco,scrapinghub/disco,mwilliams3/disco,beni55/disco,simudream/disco,ktkt2009/disco,ErikDubbelboer/disco,ktkt2009/disco,beni55/disco,seabirdzh/disco,discoproject/disco,oldmantaiter/disco,beni55/disco,mwilliams3/disco,seabirdzh/disco,pombredanne/disco,seabirdzh/disco,mwilliams3/disco,ErikDubbelboer/disco,scrapinghub/disco,pooya/disco,seabirdzh/disco,mozilla/disco,ErikDubbelboer/disco,scrapinghub/disco,oldmantaiter/disco