UI: View3D Cursor Changes

Changes the default View3D mouse cursor to the OS-supplied arrow pointer. Subsequent cursor changes will now be set per-tool instead.

Differential Revision: https://developer.blender.org/D6485

Reviewed by Campbell Barton

release/scripts/startup/bl_ui/space_toolsystem_toolbar.py

@@ -134,6 +134,7 @@ class _defs_view3d_generic:
             idname="builtin.measure",
             label="Measure",
             description=description,
+            cursor='CROSSHAIR',
             icon="ops.view3d.ruler",
             widget="VIEW3D_GGT_ruler",
             keymap="3D View Tool: Measure",
@@ -361,6 +362,7 @@ class _defs_view3d_select:
             label="Select Lasso",
             icon="ops.generic.select_lasso",
             widget=None,
+            cursor='DEFAULT',
             keymap="3D View Tool: Select Lasso",
             draw_settings=draw_settings,
         )
@@ -385,6 +387,7 @@ class _defs_view3d_select:
             label="Select Circle",
             icon="ops.generic.select_circle",
             widget=None,
+            cursor='DEFAULT',
             keymap="3D View Tool: Select Circle",
             draw_settings=draw_settings,
             draw_cursor=draw_cursor,