bug 1005: Update cmakefile

RTCP/FCNP/src/CMakeLists.txt

+find_path (HAVE_LINK_FCNP FCNP ${CMAKE_CURRENT_SOURCE_DIR})
+if (HAVE_LINK_FCNP)
+  set (HAVE_LINK_FCNP TRUE CACHE BOOL "Have link FCNP?" FORCE)
+  execute_process(COMMAND rm -rf ${CMAKE_CURRENT_SOURCE_DIR}/FCNP )
+endif (HAVE_LINK_FCNP)
+
+execute_process(COMMAND ln -s ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/FCNP )
+
 ## ------------------------------------------------------------------------------
 ## Build the library