gcc complains about atexit() being implicitely defined in
xl2tpd-control.c
Fix that by including stdlib.h in xl2tpd-control.c
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Yousong Zhou <yszhou4tech@gmail.com> made a couple of useful fixes
mostly for the xl2tpd-control tool which was broken.
imported them (patches/2*) here.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>