Add payment disclosure as experimental feature.

src/Makefile.am

@@ -160,6 +160,8 @@ BITCOIN_CORE_H = \
   net.h \
   netbase.h \
   noui.h \
+  paymentdisclosure.h \
+  paymentdisclosuredb.h \
   policy/fees.h \
   pow.h \
   primitives/block.h \
@@ -244,6 +246,8 @@ libbitcoin_server_a_SOURCES = \
   miner.cpp \
   net.cpp \
   noui.cpp \
+  paymentdisclosure.cpp \
+  paymentdisclosuredb.cpp \
   policy/fees.cpp \
   pow.cpp \
   rest.cpp \
@@ -293,6 +297,9 @@ libbitcoin_wallet_a_SOURCES = \
   wallet/asyncrpcoperation_shieldcoinbase.cpp \
   wallet/crypter.cpp \
   wallet/db.cpp \
+  paymentdisclosure.cpp \
+  paymentdisclosuredb.cpp \
+  wallet/rpcdisclosure.cpp \
   wallet/rpcdump.cpp \
   wallet/rpcwallet.cpp \
   wallet/wallet.cpp \