Some cleanup regarding libdevcore. Also rename to avoid conflicts.

libevmasm/Assembly.h

@@ -33,10 +33,6 @@
 #include "Exceptions.h"
 #include <json/json.h>
 
-namespace Json
-{
-class Value;
-}
 namespace dev
 {
 namespace eth

libevmasm/CMakeLists.txt

@@ -8,7 +8,7 @@ file(GLOB HEADERS "*.h")
 
 include_directories(BEFORE ..)
 add_library(${EXECUTABLE} ${SRC_LIST} ${HEADERS})
-eth_use(${EXECUTABLE} REQUIRED Dev::devcore)
+eth_use(${EXECUTABLE} REQUIRED Jsoncpp Dev::devcore)
 
 install( TARGETS ${EXECUTABLE} RUNTIME DESTINATION bin ARCHIVE DESTINATION lib LIBRARY DESTINATION lib )
 install( FILES ${HEADERS} DESTINATION include/${EXECUTABLE} )