message: COMP: fix cmake shared libs config to avoid warnings
  This fixes the warning:
  /usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld:
  Warning: type of symbol `randomseed' changed from 1 to 2 in
  ../lib/liblpsolve55.a(myblas.c.o)
diff: @@ -95,11 +95,10 @@ endif()
  # --------------------------------------------------------
  # Shared libraries option
  -if("${ITK_LIBRARY_BUILD_TYPE}" STREQUAL "SHARED")
  - set(RTK_BUILD_SHARED_LIBS ON)
  -else()
  - set(RTK_BUILD_SHARED_LIBS ${BUILD_SHARED_LIBS})
  +if(NOT ITK_SOURCE_DIR)
  + set(BUILD_SHARED_LIBS ${ITK_BUILD_SHARED})
  endif()
  +set(RTK_BUILD_SHARED_LIBS ${BUILD_SHARED_LIBS})
  # ----------------------------------------------------------------------------
  # Set RTK_DATA_ROOT
  