Payment Protocol: X509-validated payment requests

Add support for a Payment Protocol to Bitcoin-Qt.

Payment messages are protocol-buffer encoded and communicated over
http(s), so this adds a dependency on the Google protocol buffer
library, and requires Qt with OpenSSL support.

contrib/gitian-descriptors/gitian.yml

@@ -18,38 +18,44 @@ packages:
 - "unzip"
 - "pkg-config"
 - "libpng12-dev"
-reference_datetime: "2011-01-30 00:00:00"
+reference_datetime: "2013-06-01 00:00:00"
 remotes:
 - "url": "https://github.com/bitcoin/bitcoin.git"
   "dir": "bitcoin"
 files:
 - "miniupnpc-1.6.tar.gz"
 - "qrencode-3.2.0.tar.bz2"
+- "protobuf-2.5.0.tar.bz2"
 script: |
   INSTDIR="$HOME/install"
   export LIBRARY_PATH="$INSTDIR/lib"
   #
-  tar xzf miniupnpc-1.6.tar.gz
+  tar xzfm miniupnpc-1.6.tar.gz
   cd miniupnpc-1.6
   INSTALLPREFIX=$INSTDIR make $MAKEOPTS install
   cd ..
   #
-  tar xjf qrencode-3.2.0.tar.bz2
+  tar xjfm qrencode-3.2.0.tar.bz2
   cd qrencode-3.2.0
   ./configure --prefix=$INSTDIR --enable-static --disable-shared
   make $MAKEOPTS install
   cd ..
   #
+  tar xjfm protobuf-2.5.0.tar.bz2
+  cd protobuf-2.5.0
+  ./configure --prefix=$INSTDIR --enable-static --disable-shared
+  make $MAKEOPTS install
+  cd ..
+  #
   cd bitcoin
   mkdir -p $OUTDIR/src
   git archive HEAD | tar -x -C $OUTDIR/src
   cp $OUTDIR/src/doc/README.md $OUTDIR
   cp $OUTDIR/src/COPYING $OUTDIR
-  cd src
-  make -f makefile.unix STATIC=1 OPENSSL_INCLUDE_PATH="$INSTDIR/include" OPENSSL_LIB_PATH="$INSTDIR/lib" $MAKEOPTS bitcoind USE_UPNP=0 DEBUGFLAGS=
   mkdir -p $OUTDIR/bin/$GBUILD_BITS
-  install -s bitcoind $OUTDIR/bin/$GBUILD_BITS
-  cd ..
-  qmake INCLUDEPATH="$INSTDIR/include" LIBS="-L$INSTDIR/lib" RELEASE=1 USE_QRCODE=1
+  qmake INCLUDEPATH="$INSTDIR/include" LIBS="-L$INSTDIR/lib" PROTOC="$INSTDIR/bin/protoc" PROTOBUF_LIB_PATH="$INSTDIR/lib" PROTOBUF_INCLUDE_PATH="$INSTDIR/include" RELEASE=1 USE_QRCODE=1
   make $MAKEOPTS
   install bitcoin-qt $OUTDIR/bin/$GBUILD_BITS
+  cd src
+  make -f makefile.unix STATIC=1 OPENSSL_INCLUDE_PATH="$INSTDIR/include" OPENSSL_LIB_PATH="$INSTDIR/lib" $MAKEOPTS bitcoind USE_UPNP=0 DEBUGFLAGS=
+  install -s bitcoind $OUTDIR/bin/$GBUILD_BITS