Wladimir J. van der Laan authored Jan 16, 2014 and rat4 committed Oct 01, 2014

After the tinyformat switch sprintf() family functions support passing
actual std::string objects.

Remove unnecessary c_str calls (236 of them) in logging and formatting.

Conflicts:
	src/alert.cpp
	src/bitcoinrpc.cpp
	src/core.cpp
	src/db.cpp
	src/init.cpp
	src/leveldbwrapper.cpp
	src/main.cpp
	src/miner.cpp
	src/net.cpp
	src/netbase.cpp
	src/noui.cpp
	src/protocol.cpp
	src/qt/bitcoin.cpp
	src/rpcdump.cpp
	src/rpcmisc.cpp
	src/rpcprotocol.cpp
	src/sync.cpp
	src/txdb.cpp
	src/util.cpp
	src/wallet.cpp
	src/walletdb.cpp