Edits to user prefs NDOF UI

Small changes:

- Remove "NDOF" from each setting
- Change tooltip for deadzone
- Unrelated typo in cmake comment

Reviewers: merwin, Severin

Reviewed By: merwin, Severin

Tags: #bf_blender, #user_interface

Differential Revision: https://developer.blender.org/D2319

CMakeLists.txt

@@ -867,7 +867,7 @@ endif()
 # linux only, not cached
 set(WITH_BINRELOC OFF)
 
-# MAXOSX only, set to avoid uninitialized
+# MACOSX only, set to avoid uninitialized
 set(EXETYPE "")
 
 # C/C++ flags