Define some macros telling us, that we compile for R5 and userland.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4852 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kernel/core/disk_device_manager/Jamfile

@@ -9,6 +9,10 @@ UsePrivateHeaders [ FDirName kernel util ] ;
 UsePrivateHeaders shared ;
 UsePrivateHeaders storage ;
 
+# As long as we compile for R5 userland, we define the following macros.
+SubDirCcFlags	[ FDefines USER R5_MEMORY_LAYOUT ] ;
+SubDirC++Flags	[ FDefines USER R5_MEMORY_LAYOUT ] ;
+
 SharedLibrary disk_device_manager :
 	ddm_userland_interface.cpp
 	disk_device_manager.cpp