criu --help: print extended help in one call
criu --help: print extended help in one call

This patch reformats the source to print extended help using just one
pr_msg command. Having it this way is easier to do further edits.

I have checked ./criu --help output before and after to make sure it's
the same.

Signed-off-by: Kir Kolyshkin <c0159612b0ef32139322233232df1a0d189c4b9b@openvz.org>
Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@parallels.com>

kawamuray/criu,eabatalov/criu,kawamuray/criu,gablg1/criu,fbocharov/criu,AuthenticEshkinKot/criu,fbocharov/criu,rentzsch/criu,wtf42/criu,svloyso/criu,KKoukiou/criu-remote,tych0/criu,gablg1/criu,tych0/criu,rentzsch/criu,gonkulator/criu,biddyweb/criu,kawamuray/criu,tych0/criu,gablg1/criu,ldu4/criu,AuthenticEshkinKot/criu,fbocharov/criu,AuthenticEshkinKot/criu,kawamuray/criu,gonkulator/criu,KKoukiou/criu-remote,efiop/criu,gablg1/criu,gablg1/criu,ldu4/criu,KKoukiou/criu-remote,LK4D4/criu,ldu4/criu,sdgdsffdsfff/criu,svloyso/criu,LK4D4/criu,gablg1/criu,AuthenticEshkinKot/criu,gonkulator/criu,efiop/criu,marcosnils/criu,eabatalov/criu,eabatalov/criu,efiop/criu,efiop/criu,marcosnils/criu,sdgdsffdsfff/criu,biddyweb/criu,fbocharov/criu,marcosnils/criu,rentzsch/criu,svloyso/criu,AuthenticEshkinKot/criu,tych0/criu,rentzsch/criu,svloyso/criu,marcosnils/criu,fbocharov/criu,biddyweb/criu,KKoukiou/criu-remote,KKoukiou/criu-remote,fbocharov/criu,gonkulator/criu,eabatalov/criu,wtf42/criu,efiop/criu,biddyweb/criu,wtf42/criu,KKoukiou/criu-remote,wtf42/criu,svloyso/criu,gonkulator/criu,LK4D4/criu,LK4D4/criu,tych0/criu,sdgdsffdsfff/criu,marcosnils/criu,LK4D4/criu,eabatalov/criu,kawamuray/criu,sdgdsffdsfff/criu,wtf42/criu,wtf42/criu,AuthenticEshkinKot/criu,eabatalov/criu,biddyweb/criu,ldu4/criu,tych0/criu,svloyso/criu,sdgdsffdsfff/criu,kawamuray/criu,rentzsch/criu,ldu4/criu,biddyweb/criu,efiop/criu,sdgdsffdsfff/criu,gonkulator/criu,marcosnils/criu,rentzsch/criu,LK4D4/criu,ldu4/criu