build: Fix `AC_CHECK_HEADERS` and `AC_CHECK_LIB` for `libnatpmp` package
build: Fix `AC_CHECK_HEADERS` and `AC_CHECK_LIB` for `libnatpmp` package

Xekyo/bitcoin,mruddy/bitcoin,sipsorcery/bitcoin,AkioNak/bitcoin,jamesob/bitcoin,jambolo/bitcoin,bitcoin/bitcoin,tecnovert/particl-core,fanquake/bitcoin,domob1812/bitcoin,bitcoinsSG/bitcoin,tecnovert/particl-core,fujicoin/fujicoin,sstone/bitcoin,GroestlCoin/GroestlCoin,andreaskern/bitcoin,particl/particl-core,jambolo/bitcoin,Xekyo/bitcoin,bitcoin/bitcoin,sipsorcery/bitcoin,jlopp/statoshi,GroestlCoin/bitcoin,kallewoof/bitcoin,lateminer/bitcoin,sstone/bitcoin,instagibbs/bitcoin,namecoin/namecoin-core,GroestlCoin/bitcoin,kallewoof/bitcoin,namecoin/namecoin-core,kallewoof/bitcoin,namecoin/namecoin-core,anditto/bitcoin,namecoin/namecore,jamesob/bitcoin,Xekyo/bitcoin,jambolo/bitcoin,namecoin/namecore,andreaskern/bitcoin,instagibbs/bitcoin,particl/particl-core,kallewoof/bitcoin,anditto/bitcoin,domob1812/bitcoin,instagibbs/bitcoin,sstone/bitcoin,kallewoof/bitcoin,bitcoin/bitcoin,lateminer/bitcoin,domob1812/bitcoin,tecnovert/particl-core,fujicoin/fujicoin,bitcoin/bitcoin,lateminer/bitcoin,kallewoof/bitcoin,AkioNak/bitcoin,lateminer/bitcoin,AkioNak/bitcoin,domob1812/bitcoin,GroestlCoin/bitcoin,Xekyo/bitcoin,namecoin/namecore,jamesob/bitcoin,andreaskern/bitcoin,GroestlCoin/GroestlCoin,AkioNak/bitcoin,bitcoin/bitcoin,ajtowns/bitcoin,fujicoin/fujicoin,ajtowns/bitcoin,tecnovert/particl-core,anditto/bitcoin,namecoin/namecoin-core,tecnovert/particl-core,instagibbs/bitcoin,mruddy/bitcoin,particl/particl-core,ajtowns/bitcoin,GroestlCoin/GroestlCoin,jlopp/statoshi,andreaskern/bitcoin,ajtowns/bitcoin,fujicoin/fujicoin,fanquake/bitcoin,mruddy/bitcoin,lateminer/bitcoin,domob1812/bitcoin,mruddy/bitcoin,bitcoinsSG/bitcoin,fujicoin/fujicoin,ajtowns/bitcoin,bitcoin/bitcoin,GroestlCoin/bitcoin,bitcoinsSG/bitcoin,bitcoinsSG/bitcoin,fujicoin/fujicoin,mruddy/bitcoin,fanquake/bitcoin,jambolo/bitcoin,jlopp/statoshi,andreaskern/bitcoin,jamesob/bitcoin,jlopp/statoshi,namecoin/namecore,Xekyo/bitcoin,namecoin/namecore,jambolo/bitcoin,sipsorcery/bitcoin,jamesob/bitcoin,jambolo/bitcoin,sstone/bitcoin,GroestlCoin/GroestlCoin,particl/particl-core,Xekyo/bitcoin,bitcoinsSG/bitcoin,anditto/bitcoin,mruddy/bitcoin,GroestlCoin/GroestlCoin,particl/particl-core,namecoin/namecoin-core,namecoin/namecore,sipsorcery/bitcoin,AkioNak/bitcoin,fanquake/bitcoin,tecnovert/particl-core,anditto/bitcoin,lateminer/bitcoin,instagibbs/bitcoin,GroestlCoin/bitcoin,sipsorcery/bitcoin,GroestlCoin/bitcoin,jlopp/statoshi,fanquake/bitcoin,sstone/bitcoin,jlopp/statoshi,jamesob/bitcoin,fanquake/bitcoin,anditto/bitcoin,sstone/bitcoin,particl/particl-core,instagibbs/bitcoin,sipsorcery/bitcoin,AkioNak/bitcoin,domob1812/bitcoin,namecoin/namecoin-core,andreaskern/bitcoin,bitcoinsSG/bitcoin,GroestlCoin/GroestlCoin,ajtowns/bitcoin