Display float values with btcctl with %f.
Display float values with btcctl with %f.

This commit modifies btcctl to show float values with %f instead of the
default %v.  This means the values will show similar to 1180923195.260000
instead of 1.18092319526e+09 (scientific notation).

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