fixed version check inequality

cmake_modules/TokuSetupCompiler.cmake

@@ -23,15 +23,15 @@ if (NOT CMAKE_SYSTEM_NAME STREQUAL FreeBSD)
 endif ()
 
 ## add TOKU_PTHREAD_DEBUG for debug builds
-if (CMAKE_VERSION VERSION_GREATER 2.8)
+if (CMAKE_VERSION VERSION_LESS 3.0)
+  set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_DEBUG TOKU_PTHREAD_DEBUG=1)
+  set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_DRD TOKU_PTHREAD_DEBUG=1)
+  set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_DRD _FORTIFY_SOURCE=2)
+else ()
   set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS
     $<$<OR:$<CONFIG:DEBUG>,$<CONFIG:DRD>>:TOKU_PTHREAD_DEBUG=1>
     $<$<CONFIG:DRD>:_FORTIFY_SOURCE=2>
     )
-else ()
-  set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_DEBUG TOKU_PTHREAD_DEBUG=1)
-  set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_DRD TOKU_PTHREAD_DEBUG=1)
-  set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_DRD _FORTIFY_SOURCE=2)
 endif ()
 
 ## coverage