fix clear USER_FLAG_ALLCOMMANDS flag in acl
fix clear USER_FLAG_ALLCOMMANDS flag in acl

in ACLSetUserCommandBit, when the command bit overflows, no operation
is performed, so no need clear the USER_FLAG_ALLCOMMANDS flag.

in ACLSetUser, when adding subcommand, we don't need to call
ACLGetCommandID ahead since subcommand may be empty.

antirez/redis,ofirluzon/redis,antirez/redis,yossigo/redis,neomantra/redis,antirez/redis,PKRoma/redis,charsyam/redis,yossigo/redis,charsyam/redis,antirez/redis,charsyam/redis,neomantra/redis,yossigo/redis,PKRoma/redis,soloestoy/redis,ctripcorp/redis,yossigo/redis,oranagra/redis,ctripcorp/redis,PKRoma/redis,yossigo/redis,ofirluzon/redis,neomantra/redis,charsyam/redis,soloestoy/redis,PKRoma/redis,oranagra/redis,soloestoy/redis,ofirluzon/redis,ctripcorp/redis,oranagra/redis,ofirluzon/redis,PKRoma/redis,oranagra/redis,soloestoy/redis,neomantra/redis,neomantra/redis,charsyam/redis,ofirluzon/redis,soloestoy/redis,ctripcorp/redis,oranagra/redis