Support 32 bit UID on i386
Support 32 bit UID on i386

The original SETUID takes a 16 bit UID.  Linux 2.4 introduced  a new
syscall, SETUID32, with support for 32 bit UIDs.  The setgid wrapper
already uses SETGID32.

Signed-off-by: Carl Henrik Lunde <afbb228c01ef716d910901bf3f59b12538bf9acc@ifi.uio.no>

docker/runc,vbatts/runc,sunyuan3/runc,rhatdan/runc,xiaochenshen/runc,laijs/runc,stefanberger/runc,mYmNeo/runc,WeiZhang555/runc,crosbymichael/runc,avagin/runc,justincormack/runc,adrianreber/runc,docker/runc,stefanberger/runc,kolyshkin/runc,keloyang/runc,vbatts/runc,rhatdan/runc,dqminh/runc,wking/runc,docker/runc,rajasec/runc,WeiZhang555/runc,stefanberger/runc,dqminh/runc,avagin/runc,avagin/runc,jhowardmsft/runc,cloudfoundry-incubator/runc,laijs/runc,mikebrow/runc,crosbymichael/runc,crosbymichael/runc,mYmNeo/runc,cyphar/runc,cloudfoundry-incubator/runc,sunyuan3/runc,vbatts/runc,kolyshkin/runc,wking/runc,mheon/runc,dqminh/runc,wking/runc,opencontainers/runc,dqminh/runc,laijs/runc,maxamillion/runc,keloyang/runc,rajasec/runc,cyphar/runc,coolljt0725/runc,nkwilson/runc,sunyuan3/runc,jhowardmsft/runc,nkwilson/runc,shishir-a412ed/runc,cyphar/runc,justincormack/runc,mheon/runc,cloudfoundry-incubator/runc,nkwilson/runc,justincormack/runc,rhatdan/runc,hqhq/runc,opencontainers/runc,maxamillion/runc,hqhq/runc,mheon/runc,adrianreber/runc,shishir-a412ed/runc,adrianreber/runc,mYmNeo/runc,xiaochenshen/runc,keloyang/runc,maxamillion/runc,hqhq/runc,opencontainers/runc,coolljt0725/runc,xiaochenshen/runc,mikebrow/runc,estesp/runc,kolyshkin/runc,opencontainers/runc,WeiZhang555/runc,rajasec/runc,coolljt0725/runc,estesp/runc,shishir-a412ed/runc,mikebrow/runc,rhatdan/runc,estesp/runc,kolyshkin/runc,jhowardmsft/runc