cmake: Add message if we build with static library.

CMakeLists.txt

@@ -107,6 +107,7 @@ message(STATUS "SSH-1 support: ${WITH_SSH1}")
 message(STATUS "SFTP support: ${WITH_SFTP}")
 message(STATUS "Server support : ${WITH_SERVER}")
 message(STATUS "Pcap debugging support : ${WITH_PCAP}")
+message(STATUS "With static library: ${WITH_STATIC_LIB}")
 message(STATUS "Unit testing: ${WITH_TESTING}")
 message(STATUS "Client code Unit testing: ${WITH_CLIENT_TESTING}")
 if (WITH_INTERNAL_DOC)