re-disable secp256k1 for windows

CMakeLists.txt

@@ -405,8 +405,10 @@ if (JSCONSOLE)
 	add_subdirectory(ethconsole)
 endif ()
 
-add_definitions(-DETH_HAVE_SECP256K1)
-add_subdirectory(secp256k1)
+if (NOT WIN32)
+	add_definitions(-DETH_HAVE_SECP256K1)
+	add_subdirectory(secp256k1)
+endif ()
 
 add_subdirectory(libscrypt)
 add_subdirectory(libdevcrypto)

libdevcrypto/CMakeLists.txt

@@ -24,8 +24,10 @@ target_link_libraries(${EXECUTABLE} ${DB_LIBRARIES})
 target_link_libraries(${EXECUTABLE} ${CRYPTOPP_LIBRARIES})
 target_link_libraries(${EXECUTABLE} scrypt)
 target_link_libraries(${EXECUTABLE} devcore)
-add_definitions(-DETH_HAVE_SECP256K1)
-target_link_libraries(${EXECUTABLE} secp256k1)
+if (NOT WIN32)
+	add_definitions(-DETH_HAVE_SECP256K1)
+	target_link_libraries(${EXECUTABLE} secp256k1)
+endif ()
 
 install( TARGETS ${EXECUTABLE} RUNTIME DESTINATION bin ARCHIVE DESTINATION lib LIBRARY DESTINATION lib )
 install( FILES ${HEADERS} DESTINATION include/${EXECUTABLE} )