close inherited fds when we still have proc mounted
close inherited fds when we still have proc mounted

and don't close the sigfd

Signed-off-by: Serge Hallyn <3df611b026e4639bee8aef7a4beb2e39fcebb313@ubuntu.com>

thmo/lxc,hkjolhede/lxc,armcc/lxc,regit/lxc,ysbnim/lxc,cjwatson/lxc,raspberrypython/lxc,ojkastl/lxc_Patches,hallyn/lxc,yubo/lxc,efiop/lxc,hallyn/lxc,terceiro/lxc,terceiro/lxc,Ponce/lxc,Pelagicore/lxc,regit/lxc,szaszg/lxc,sapun/lxc,Pelagicore/lxc,JohnPeacockMessageSystems/lxc,aeris/lxc,ksperis/lxc,Distrotech/lxc,terceiro/lxc,tych0/lxc,fwilson42/lxc,raspberrypython/lxc,federicobriata/lxc,aeris/lxc,virajs/lxc,Ponce/lxc,ojkastl/lxc_Patches,ioops/lxc,Pelagicore/lxc,caglar10ur/lxc,ecarrara/lxc,christiaan/lxc,rowhit/lxc,hkjolhede/lxc,hfuCN/lxc,LynxChaus/lxc,szaszg/lxc,major/lxc,QingweiPeterLan/cs188-lxc,QingweiPeterLan/cs188-lxc,codebauss/lxc,GreatFruitOmsk/lxc,ecarrara/lxc,yubo/lxc,lisongmin/lxc,cjwatson/lxc,weizhenwei/lxc,jirislaby/lxc,sapun/lxc,lisongmin/lxc,efiop/lxc,tych0/lxc,ss1h2a3tw/lxc,rldleblanc/lxc,lazy404/lxc,ksperis/lxc,ojkastl/lxc_Patches,bostjan/lxc,DarknessBeforeDawn/lxc,caglar10ur/lxc,rowhit/lxc,fwilson42/lxc,thmo/lxc,armcc/lxc,akshaykarle/lxc,weizhenwei/lxc,lisongmin/lxc,ksperis/lxc,QingweiPeterLan/cs188-lxc,ioops/lxc,rldleblanc/lxc,major/lxc,virajs/lxc,ysbnim/lxc,bmoar/lxc,federicobriata/lxc,ojkastl/lxc_Patches,JohnPeacockMessageSystems/lxc,codebauss/lxc,Distrotech/lxc,ss1h2a3tw/lxc,aeris/lxc,lazy404/lxc,tych0/lxc,jirislaby/lxc,bmoar/lxc,LynxChaus/lxc,regit/lxc,hfuCN/lxc,hallyn/lxc,szaszg/lxc,christiaan/lxc,GreatFruitOmsk/lxc,yubo/lxc,ecarrara/lxc,ysbnim/lxc,raspberrypython/lxc,major/lxc,hkjolhede/lxc,akshaykarle/lxc,bmoar/lxc,hfuCN/lxc,armcc/lxc,thmo/lxc,GreatFruitOmsk/lxc,bostjan/lxc,bostjan/lxc,Distrotech/lxc,LynxChaus/lxc,Ponce/lxc,federicobriata/lxc,sapun/lxc,lazy404/lxc,DarknessBeforeDawn/lxc,ss1h2a3tw/lxc,codebauss/lxc,jirislaby/lxc,weizhenwei/lxc,akshaykarle/lxc,DarknessBeforeDawn/lxc,rowhit/lxc,JohnPeacockMessageSystems/lxc,caglar10ur/lxc,efiop/lxc,christiaan/lxc,virajs/lxc,rldleblanc/lxc,fwilson42/lxc,cjwatson/lxc,ioops/lxc