Added short versions of --version and --jobs options
Added short versions of --version and --jobs options

mpeterv/luacheck,xpol/luacheck,tst2005/luacheck,mpeterv/luacheck,linuxmaniac/luacheck,kidaa/luacheck,linuxmaniac/luacheck,xpol/luacheck,adan830/luacheck,kidaa/luacheck,mpeterv/luacheck,xpol/luacheck,tst2005/luacheck,adan830/luacheck