build CHANGE fail to compile with libssh 0.9.3

It includes fatal regression bugs.
Refs #192

Author: michalvasko

CMakeLists.txt

@@ -213,6 +213,10 @@ endif()
 if(ENABLE_SSH)
     find_package(LibSSH 0.7.0 REQUIRED)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DNC_ENABLED_SSH")
+    message(STATUS "LibSSH version ${LibSSH_VERSION} found")
+    if(LibSSH_VERSION VERSION_EQUAL 0.9.3)
+        message(FATAL_ERROR "LibSSH 0.9.3 includes regression bugs and libnetconf2 will NOT work properly, try to use an older version")
+    endif()
     if(LibSSH_VERSION VERSION_LESS 0.8.0)
         target_link_libraries(netconf2 "-L${LIBSSH_LIBRARY_DIR}" -lssh -lssh_threads -lcrypt)
     else()