Remove blurb about 100% coverage and replace with comprehensive.
Remove blurb about 100% coverage and replace with comprehensive.

btcscript contains an amount of debug logging that is very useful to
have. We have agreed that testing this isn't realy practical or indeed
really useful and thus is rather unlikely to grow test coverage any time
soon.

sysbot/btcd,Dirbaio/btcd,Roasbeef/btcd,Stash-Crypto/btcd,pkothbauer/btcd,runeaune/btcd,ppcsuite/ppcd-old,tb00/btcd,jcmincke/dcrd,Dirbaio/btcd,hectorj/btcd,FactomProject/btcd,btcsuite/btcd,jrick/dcrd,wallclockbuilder/btcd,stevenroose/btcd,DanielKrawisz/btcd,glv2/ppcd,jcmincke/dcrd,ppcsuite/ppcd-old,aakselrod/btcd,pkothbauer/btcd,CryptocurrencyCabal/htcd,jcmincke/dcrd,DanielKrawisz/btcd,mathiasrw/btcd,CryptocurrencyCabal/htcd,btcsuitereleases/btcd,cjepson/btcd,Cleawing/btcd,Roasbeef/btcd,davecgh/btcd,dan-da/btcd,adiabat/btcd,dan-da/btcd,sysbot/btcd,decred/dcrd,Dirbaio/btcd,toddfries/btcd,runeaune/btcd,BitGo/prova,dajohi/btcd,qchain/btcd,danoctavian/btcd,jrick/dcrd,cqswxj2013/btcd,ltcsuite/ltcd,btcsuitereleases/btcd,cqswxj2013/btcd,Stash-Crypto/btcd,FactomProject/btcd,jongillham/btcd,BitGo/prova,soapboxsys/ombfullnode,jrick/btcd,adiabat/btcd,davecgh/btcd,stevenroose/btcd,jrick/btcd,ppcsuite/ppcd,hectorj/btcd,jimmysong/btcd,soapboxsys/ombfullnode,decred/dcrd,1d4Nf6/btcd,qchain/btcd,ppcsuite/ppcd,1d4Nf6/btcd,danoctavian/btcd,dajohi/btcd,btcsuite/btcd,jimmysong/btcd,jrick/btcd,cjepson/btcd,tb00/btcd,aakselrod/btcd,ltcsuite/ltcd,toddfries/btcd,dajohi/btcd,wallclockbuilder/btcd,Cleawing/btcd,jongillham/btcd,mathiasrw/btcd,glv2/ppcd