build: Small libxcb.mk improvements
build: Small libxcb.mk improvements

qtumproject/qtum,prusnak/bitcoin,bitcoin/bitcoin,jambolo/bitcoin,domob1812/bitcoin,instagibbs/bitcoin,particl/particl-core,domob1812/namecore,MarcoFalke/bitcoin,namecoin/namecore,tecnovert/particl-core,dscotese/bitcoin,jambolo/bitcoin,fanquake/bitcoin,dscotese/bitcoin,apoelstra/bitcoin,fujicoin/fujicoin,ajtowns/bitcoin,jlopp/statoshi,AkioNak/bitcoin,sipsorcery/bitcoin,tecnovert/particl-core,prusnak/bitcoin,AkioNak/bitcoin,jlopp/statoshi,bitcoin/bitcoin,domob1812/namecore,namecoin/namecoin-core,domob1812/bitcoin,yenliangl/bitcoin,apoelstra/bitcoin,namecoin/namecoin-core,ElementsProject/elements,JeremyRubin/bitcoin,instagibbs/bitcoin,fujicoin/fujicoin,ElementsProject/elements,rnicoll/bitcoin,jlopp/statoshi,kallewoof/bitcoin,dscotese/bitcoin,GroestlCoin/bitcoin,domob1812/bitcoin,jambolo/bitcoin,bitcoinsSG/bitcoin,lateminer/bitcoin,rnicoll/bitcoin,bitcoinsSG/bitcoin,Xekyo/bitcoin,qtumproject/qtum,pataquets/namecoin-core,Xekyo/bitcoin,instagibbs/bitcoin,mm-s/bitcoin,dscotese/bitcoin,kallewoof/bitcoin,JeremyRubin/bitcoin,namecoin/namecore,MarcoFalke/bitcoin,jlopp/statoshi,jamesob/bitcoin,jamesob/bitcoin,jamesob/bitcoin,instagibbs/bitcoin,bitcoinsSG/bitcoin,JeremyRubin/bitcoin,namecoin/namecore,bitcoin/bitcoin,JeremyRubin/bitcoin,domob1812/namecore,ajtowns/bitcoin,jamesob/bitcoin,instagibbs/bitcoin,andreaskern/bitcoin,bitcoin/bitcoin,jlopp/statoshi,fujicoin/fujicoin,MarcoFalke/bitcoin,GroestlCoin/GroestlCoin,ajtowns/bitcoin,particl/particl-core,mruddy/bitcoin,particl/particl-core,prusnak/bitcoin,jambolo/bitcoin,tecnovert/particl-core,bitcoinsSG/bitcoin,GroestlCoin/GroestlCoin,bitcoinknots/bitcoin,anditto/bitcoin,rnicoll/bitcoin,GroestlCoin/GroestlCoin,sipsorcery/bitcoin,mruddy/bitcoin,AkioNak/bitcoin,bitcoin/bitcoin,tecnovert/particl-core,tecnovert/particl-core,fanquake/bitcoin,fanquake/bitcoin,particl/particl-core,domob1812/namecore,lateminer/bitcoin,instagibbs/bitcoin,ajtowns/bitcoin,andreaskern/bitcoin,bitcoinknots/bitcoin,sipsorcery/bitcoin,particl/particl-core,MarcoFalke/bitcoin,jamesob/bitcoin,AkioNak/bitcoin,apoelstra/bitcoin,mruddy/bitcoin,GroestlCoin/GroestlCoin,yenliangl/bitcoin,lateminer/bitcoin,anditto/bitcoin,kallewoof/bitcoin,ajtowns/bitcoin,prusnak/bitcoin,GroestlCoin/bitcoin,particl/particl-core,anditto/bitcoin,lateminer/bitcoin,GroestlCoin/bitcoin,domob1812/bitcoin,qtumproject/qtum,dscotese/bitcoin,jambolo/bitcoin,fujicoin/fujicoin,mm-s/bitcoin,Xekyo/bitcoin,dscotese/bitcoin,GroestlCoin/bitcoin,kallewoof/bitcoin,andreaskern/bitcoin,Xekyo/bitcoin,GroestlCoin/GroestlCoin,sstone/bitcoin,namecoin/namecoin-core,bitcoin/bitcoin,namecoin/namecoin-core,kallewoof/bitcoin,achow101/bitcoin,pataquets/namecoin-core,pataquets/namecoin-core,fujicoin/fujicoin,lateminer/bitcoin,domob1812/namecore,ElementsProject/elements,qtumproject/qtum,namecoin/namecore,prusnak/bitcoin,rnicoll/bitcoin,prusnak/bitcoin,bitcoinsSG/bitcoin,namecoin/namecore,sipsorcery/bitcoin,achow101/bitcoin,Xekyo/bitcoin,domob1812/bitcoin,andreaskern/bitcoin,rnicoll/bitcoin,fanquake/bitcoin,jambolo/bitcoin,rnicoll/bitcoin,sstone/bitcoin,GroestlCoin/bitcoin,bitcoinknots/bitcoin,jlopp/statoshi,sipsorcery/bitcoin,anditto/bitcoin,mruddy/bitcoin,achow101/bitcoin,apoelstra/bitcoin,mm-s/bitcoin,ElementsProject/elements,MarcoFalke/bitcoin,domob1812/namecore,JeremyRubin/bitcoin,anditto/bitcoin,pataquets/namecoin-core,jamesob/bitcoin,domob1812/bitcoin,yenliangl/bitcoin,mruddy/bitcoin,bitcoinsSG/bitcoin,ajtowns/bitcoin,yenliangl/bitcoin,pataquets/namecoin-core,fanquake/bitcoin,namecoin/namecoin-core,mm-s/bitcoin,AkioNak/bitcoin,bitcoinknots/bitcoin,qtumproject/qtum,sstone/bitcoin,andreaskern/bitcoin,fanquake/bitcoin,fujicoin/fujicoin,mm-s/bitcoin,qtumproject/qtum,namecoin/namecoin-core,Xekyo/bitcoin,qtumproject/qtum,lateminer/bitcoin,sipsorcery/bitcoin,MarcoFalke/bitcoin,kallewoof/bitcoin,anditto/bitcoin,sstone/bitcoin,achow101/bitcoin,JeremyRubin/bitcoin,mm-s/bitcoin,andreaskern/bitcoin,GroestlCoin/bitcoin,pataquets/namecoin-core,tecnovert/particl-core,achow101/bitcoin,apoelstra/bitcoin,ElementsProject/elements,apoelstra/bitcoin,AkioNak/bitcoin,mruddy/bitcoin,achow101/bitcoin,bitcoinknots/bitcoin,yenliangl/bitcoin,GroestlCoin/GroestlCoin,sstone/bitcoin,sstone/bitcoin,namecoin/namecore,ElementsProject/elements,yenliangl/bitcoin