message: add private key parsing to cashlib
diff: @@ -351,11 +351,10 @@ libbitcoin_wallet_a_SOURCES = \
  libbitcoincash_a_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
  libbitcoincash_a_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
  -# base58.cpp
  -# base58.h
  -
  libbitcoincash_a_SOURCES = \
  cashlib/cashlib.cpp \
  + base58.cpp \
  + base58.h \
  chainparams.cpp \
  chainparams.h \
  chainparamsbase.cpp \
  