CMake: Build OpenXR as dll on windows;

CMakeLists.txt

@@ -219,6 +219,7 @@ if(LOVR_ENABLE_HEADSET AND LOVR_USE_OPENXR)
       include_directories(${OPENXR_INCLUDE_DIRS})
       set(LOVR_OPENXR ${OPENXR_LIBRARIES})
     else()
+      set(DYNAMIC_LOADER ON CACHE BOOL "")
       add_subdirectory(deps/openxr openxr)
       set(LOVR_OPENXR openxr_loader)
     endif()
@@ -642,9 +643,7 @@ if(WIN32)
   move_dll(${LOVR_MSDF})
   move_dll(${LOVR_OCULUS_AUDIO})
   move_dll(${LOVR_PHONON})
-  if(LOVR_USE_OPENXR AND NOT LOVR_SYSTEM_OPENXR)
-    move_dll(${LOVR_OPENXR})
-  endif()
+  move_dll(${LOVR_OPENXR})
   foreach(target ${ALL_PLUGIN_TARGETS})
     move_dll(${target})
   endforeach()