doc: More precise -debug and -debugexclude doc
doc: More precise -debug and -debugexclude doc

I wondered how one could enable debug logging with `-debug=<category>` for multiple categories. Found out solution is to specify that option multiple times for each wanted category.

This PR documents this behavior and uses the same wording for the same behavior of `-debugexclude=<category>` to make that also clear and stringent.
MarcoFalke/bitcoin,bitcoin/bitcoin,jambolo/bitcoin,GroestlCoin/GroestlCoin,dscotese/bitcoin,fujicoin/fujicoin,sipsorcery/bitcoin,pataquets/namecoin-core,achow101/bitcoin,jambolo/bitcoin,yenliangl/bitcoin,GroestlCoin/bitcoin,AkioNak/bitcoin,n1bor/bitcoin,sipsorcery/bitcoin,particl/particl-core,Xekyo/bitcoin,practicalswift/bitcoin,sipsorcery/bitcoin,pataquets/namecoin-core,mruddy/bitcoin,pataquets/namecoin-core,JeremyRubin/bitcoin,kallewoof/bitcoin,andreaskern/bitcoin,dscotese/bitcoin,practicalswift/bitcoin,mm-s/bitcoin,GroestlCoin/GroestlCoin,GroestlCoin/GroestlCoin,tecnovert/particl-core,lateminer/bitcoin,Sjors/bitcoin,bitcoinsSG/bitcoin,tecnovert/particl-core,prusnak/bitcoin,andreaskern/bitcoin,JeremyRubin/bitcoin,namecoin/namecoin-core,mm-s/bitcoin,prusnak/bitcoin,mruddy/bitcoin,JeremyRubin/bitcoin,domob1812/bitcoin,dscotese/bitcoin,jamesob/bitcoin,lateminer/bitcoin,qtumproject/qtum,fujicoin/fujicoin,rnicoll/bitcoin,qtumproject/qtum,mruddy/bitcoin,GroestlCoin/bitcoin,lateminer/bitcoin,domob1812/bitcoin,andreaskern/bitcoin,MarcoFalke/bitcoin,namecoin/namecoin-core,n1bor/bitcoin,ElementsProject/elements,rnicoll/bitcoin,bitcoin/bitcoin,rnicoll/bitcoin,instagibbs/bitcoin,bitcoin/bitcoin,instagibbs/bitcoin,Xekyo/bitcoin,prusnak/bitcoin,bitcoinknots/bitcoin,domob1812/bitcoin,jambolo/bitcoin,achow101/bitcoin,instagibbs/bitcoin,anditto/bitcoin,bitcoinsSG/bitcoin,kallewoof/bitcoin,Xekyo/bitcoin,jamesob/bitcoin,bitcoinknots/bitcoin,achow101/bitcoin,sstone/bitcoin,fanquake/bitcoin,fanquake/bitcoin,pstratem/bitcoin,namecoin/namecoin-core,anditto/bitcoin,domob1812/namecore,n1bor/bitcoin,andreaskern/bitcoin,mruddy/bitcoin,particl/particl-core,rnicoll/bitcoin,sstone/bitcoin,bitcoinsSG/bitcoin,tecnovert/particl-core,MeshCollider/bitcoin,mruddy/bitcoin,jlopp/statoshi,pstratem/bitcoin,qtumproject/qtum,kallewoof/bitcoin,instagibbs/bitcoin,tecnovert/particl-core,pataquets/namecoin-core,bitcoinsSG/bitcoin,namecoin/namecore,pstratem/bitcoin,ElementsProject/elements,n1bor/bitcoin,AkioNak/bitcoin,practicalswift/bitcoin,bitcoinknots/bitcoin,namecoin/namecore,namecoin/namecore,fujicoin/fujicoin,Xekyo/bitcoin,prusnak/bitcoin,jlopp/statoshi,MarcoFalke/bitcoin,jlopp/statoshi,domob1812/bitcoin,ajtowns/bitcoin,fanquake/bitcoin,sstone/bitcoin,rnicoll/bitcoin,Sjors/bitcoin,namecoin/namecoin-core,anditto/bitcoin,mm-s/bitcoin,bitcoin/bitcoin,domob1812/bitcoin,jambolo/bitcoin,fanquake/bitcoin,jamesob/bitcoin,namecoin/namecore,jlopp/statoshi,AkioNak/bitcoin,sstone/bitcoin,MarcoFalke/bitcoin,MarcoFalke/bitcoin,lateminer/bitcoin,GroestlCoin/bitcoin,pstratem/bitcoin,particl/particl-core,MeshCollider/bitcoin,ajtowns/bitcoin,ajtowns/bitcoin,apoelstra/bitcoin,kallewoof/bitcoin,JeremyRubin/bitcoin,JeremyRubin/bitcoin,ajtowns/bitcoin,apoelstra/bitcoin,pstratem/bitcoin,mruddy/bitcoin,anditto/bitcoin,ElementsProject/elements,yenliangl/bitcoin,practicalswift/bitcoin,JeremyRubin/bitcoin,qtumproject/qtum,jambolo/bitcoin,practicalswift/bitcoin,namecoin/namecore,qtumproject/qtum,prusnak/bitcoin,sstone/bitcoin,fujicoin/fujicoin,ajtowns/bitcoin,particl/particl-core,apoelstra/bitcoin,dscotese/bitcoin,ElementsProject/elements,bitcoin/bitcoin,anditto/bitcoin,mm-s/bitcoin,pstratem/bitcoin,achow101/bitcoin,rnicoll/bitcoin,GroestlCoin/GroestlCoin,kallewoof/bitcoin,achow101/bitcoin,fujicoin/fujicoin,sipsorcery/bitcoin,qtumproject/qtum,domob1812/namecore,MarcoFalke/bitcoin,namecoin/namecoin-core,GroestlCoin/bitcoin,domob1812/namecore,domob1812/namecore,bitcoin/bitcoin,AkioNak/bitcoin,pataquets/namecoin-core,kallewoof/bitcoin,ajtowns/bitcoin,bitcoinsSG/bitcoin,andreaskern/bitcoin,Sjors/bitcoin,AkioNak/bitcoin,domob1812/namecore,tecnovert/particl-core,ElementsProject/elements,mm-s/bitcoin,yenliangl/bitcoin,lateminer/bitcoin,sipsorcery/bitcoin,particl/particl-core,lateminer/bitcoin,yenliangl/bitcoin,bitcoinsSG/bitcoin,Sjors/bitcoin,AkioNak/bitcoin,domob1812/namecore,instagibbs/bitcoin,apoelstra/bitcoin,qtumproject/qtum,particl/particl-core,mm-s/bitcoin,MeshCollider/bitcoin,practicalswift/bitcoin,dscotese/bitcoin,jambolo/bitcoin,MeshCollider/bitcoin,fanquake/bitcoin,jlopp/statoshi,sstone/bitcoin,jlopp/statoshi,jamesob/bitcoin,Xekyo/bitcoin,GroestlCoin/GroestlCoin,jamesob/bitcoin,yenliangl/bitcoin,pataquets/namecoin-core,MeshCollider/bitcoin,bitcoinknots/bitcoin,yenliangl/bitcoin,namecoin/namecoin-core,jamesob/bitcoin,apoelstra/bitcoin,n1bor/bitcoin,fanquake/bitcoin,prusnak/bitcoin,Sjors/bitcoin,GroestlCoin/GroestlCoin,GroestlCoin/bitcoin,GroestlCoin/bitcoin,domob1812/bitcoin,Xekyo/bitcoin,instagibbs/bitcoin,tecnovert/particl-core,dscotese/bitcoin,apoelstra/bitcoin,ElementsProject/elements,fujicoin/fujicoin,MeshCollider/bitcoin,anditto/bitcoin,n1bor/bitcoin,bitcoinknots/bitcoin,andreaskern/bitcoin,sipsorcery/bitcoin,namecoin/namecore,achow101/bitcoin