new site method getglobaluserinfo() and new property globaluserinfo
new site method getglobaluserinfo() and new property globaluserinfo

This is similar to getuserinfo() and its property

Change-Id: Ief055d44a0aab6df44ff7084484069a36199b88f

VcamX/pywikibot-core,xZise/pywikibot-core,emijrp/pywikibot-core,valhallasw/pywikibot-core,hasteur/g13bot_tools_new,trishnaguha/pywikibot-core,Darkdadaah/pywikibot-core,icyflame/batman,jayvdb/pywikibot-core,jayvdb/pywikibot-core,darthbhyrava/pywikibot-local,PersianWikipedia/pywikibot-core,hasteur/g13bot_tools_new,hasteur/g13bot_tools_new,wikimedia/pywikibot-core,wikimedia/pywikibot-core,Darkdadaah/pywikibot-core,magul/pywikibot-core,magul/pywikibot-core,smalyshev/pywikibot-core,h4ck3rm1k3/pywikibot-core,npdoty/pywikibot,h4ck3rm1k3/pywikibot-core,happy5214/pywikibot-core,TridevGuha/pywikibot-core,npdoty/pywikibot,happy5214/pywikibot-core