Defaults: left click select is now the default.

A few reasons motivating this change:
* It works well for all devices: mouse, trackpad, and tablet pens.
* For beginners or users coming from other software, it's easier to get
  started and avoids an initial stumbling block.
* Many users in 2.7 (about half?) were already using left click select, so
  combined with the above advantages it makes for a practical default.

Note that we continue to support right click select, as many experienced
Blender users (and developers) see efficiency advantages in this approach.

The option to switch is in the first time setup splash screen, and in the
user preferences.

2 files changed, 7 insertions, 7 deletions

diff --git a/release/scripts/presets/keyconfig/blender.py b/release/scripts/presets/keyconfig/blender.py
index 6e9faa22762..bda19e075a3 100644
--- a/release/scripts/presets/keyconfig/blender.py
+++ b/release/scripts/presets/keyconfig/blender.py
@@ -20,15 +20,15 @@ class Prefs(bpy.types.KeyConfigPreferences):
         items=(
             ('LEFT', "Left",
              "Use left mouse button for selection. "
-             "The standard behavior that works well for all input devices"),
+             "The standard behavior that works well for mouse, trackpad and tablet devices"),
             ('RIGHT', "Right",
-             "Use right mouse button for selection."
-             "For efficiently working with keyboard and mouse"),
+             "Use right mouse button for selection, and left mouse button for actions. "
+             "This works well primarily for keyboard and mouse devices"),
         ),
         description=(
             "Mouse button used for selection"
         ),
-        default='RIGHT',
+        default='LEFT',
         update=update_fn,
     )
     spacebar_action: EnumProperty(
diff --git a/release/scripts/presets/keyconfig/blender_27x.py b/release/scripts/presets/keyconfig/blender_27x.py
index 9233e226dc9..f0aae89d5bd 100644
--- a/release/scripts/presets/keyconfig/blender_27x.py
+++ b/release/scripts/presets/keyconfig/blender_27x.py
@@ -19,10 +19,10 @@ class Prefs(bpy.types.KeyConfigPreferences):
         items=(
             ('LEFT', "Left",
              "Use left mouse button for selection. "
-             "Standard behavior that works well for all input devices"),
+             "The standard behavior that works well for mouse, trackpad and tablet devices"),
             ('RIGHT', "Right",
-             "Use right mouse button for selection."
-             "For efficiently working with keyboard and mouse"),
+             "Use right mouse button for selection, and left mouse button for actions. "
+             "This works well primarily for keyboard and mouse devices"),
         ),
         description=(
             "Mouse button used for selection"