First part of an RPC mechanism for container <-> host communication

Mostly based on the protobuf based implementation from Mir.

android/CMakeLists.txt

@@ -1,4 +1,21 @@
+include_directories(
+  ${CMAKE_SOURCE_DIR}
+  ${CMAKE_SOURCE_DIR}/src
+  ${CMAKE_BINARY_DIR}/src)
+
 set(ANBOXD_SOURCES
+    ${CMAKE_SOURCE_DIR}/src/anbox/bridge/message_processor.cpp
+    ${CMAKE_SOURCE_DIR}/src/anbox/bridge/pending_call_cache.cpp
+    ${CMAKE_SOURCE_DIR}/src/anbox/common/fd.cpp
+    service/server.cpp
+    service/message_processor.cpp
+    service/local_socket_connection.cpp
+    service/host_connector.cpp
+    service/daemon.cpp
     service/main.cpp)
 
 add_executable(anboxd ${ANBOXD_SOURCES})
+target_link_libraries(anboxd
+    pthread
+    process-cpp
+    anbox-protobuf)