Fix Phusion Passenger Standalone's 'start --help' message: the spawn method's default is now 'smart'; 'smart-lv2' no longer exists.
Fix Phusion Passenger Standalone's 'start --help' message: the spawn method's default is now 'smart'; 'smart-lv2' no longer exists.

bf4/passenger,kewaunited/passenger,phusion/passenger,antek-drzewiecki/passenger,kewaunited/passenger,phusion/passenger,phusion/passenger,kewaunited/passenger,clemensg/passenger,jawj/passenger,antek-drzewiecki/passenger,kewaunited/passenger,cgvarela/passenger,clemensg/passenger,kewaunited/passenger,kewaunited/passenger,clemensg/passenger,pkmiec/passenger,pkmiec/passenger,phusion/passenger,bf4/passenger,jawj/passenger,clemensg/passenger,bf4/passenger,clemensg/passenger,clemensg/passenger,bf4/passenger,cgvarela/passenger,cgvarela/passenger,jawj/passenger,pkmiec/passenger,cgvarela/passenger,bf4/passenger,antek-drzewiecki/passenger,cgvarela/passenger,pkmiec/passenger,bf4/passenger,phusion/passenger,pkmiec/passenger,cgvarela/passenger,pkmiec/passenger,cgvarela/passenger,jawj/passenger,jawj/passenger,phusion/passenger,pkmiec/passenger,antek-drzewiecki/passenger,kewaunited/passenger,antek-drzewiecki/passenger,clemensg/passenger,phusion/passenger,antek-drzewiecki/passenger,bf4/passenger,antek-drzewiecki/passenger,phusion/passenger,kewaunited/passenger,jawj/passenger,clemensg/passenger,jawj/passenger,cgvarela/passenger,antek-drzewiecki/passenger