Rigify: add support for user-defined rig packages and related utilities.

As suggested by @icappielo, and after discussion with @meta-androcto,
I start a public request to commit third-party contributions already
accepted to https://github.com/eigen-value/rigify/tree/rigify_0.6_beta

Specifically, this includes:

* User-defined rig package (feature set) support by @pioverfour.
  This allows users to install pre-packaged rig sets via zip
  files, which become accessible together with built-in rigs,
  as discussed in T52758.

  https://github.com/eigen-value/rigify/pull/1

* Modularization of python script generation, allowing rigs to
  add their own utility functions and operators to the generated
  script. This is critical to make custom rig support really
  useful.

  https://github.com/eigen-value/rigify/pull/5

* The utils.py file is split into multiple modules with a backward
  compatibility proxy for old functions.

* Automatic verification that different rigs don't try to create
  different rig settings with the same name to alleviate increased
  risk of namespace conflicts with custom rigs.

  https://github.com/eigen-value/rigify/pull/7

* New utility class that implements bone layer selection UI.

  https://github.com/eigen-value/rigify/pull/6

* New utilities to replace copy & pasted boilerplate code for
  creating custom properties, constraints and drivers.

  https://github.com/eigen-value/rigify/pull/11

Some other random changes by MAD have likely slipped through.

These changes have already been extensively discussed and accepted
into the branch by @luciorossi, so I see no reason not to commit
them to the official repository to be tested during 2.8 beta.

Reviewers: icappiello

Differential Revision: https://developer.blender.org/D4364

2 files changed, 2 insertions, 2 deletions

diff --git a/rigify/legacy/rigs/biped/arm/__init__.py b/rigify/legacy/rigs/biped/arm/__init__.py
index e418a45a..e30b58cc 100644
--- a/rigify/legacy/rigs/biped/arm/__init__.py
+++ b/rigify/legacy/rigs/biped/arm/__init__.py
@@ -117,7 +117,7 @@ def add_parameters(params):
 
     """
     params.use_complex_arm = bpy.props.BoolProperty(name="Complex Arm Rig", default=True, description="Generate the full, complex arm rig with twist bones and rubber-hose controls")
-    params.bend_hint = bpy.props.BoolProperty(name="Bend Hint", default=True, description="Give IK chain a hint about which way to bend.  Useful for perfectly straight chains")
+    params.bend_hint = bpy.props.BoolProperty(name="Bend Hint", default=True, description="Give IK chain a hint about which way to bend. Useful for perfectly straight chains")
 
     items = [('X', 'X', ''), ('Y', 'Y', ''), ('Z', 'Z', ''), ('-X', '-X', ''), ('-Y', '-Y', ''), ('-Z', '-Z', '')]
     params.primary_rotation_axis = bpy.props.EnumProperty(items=items, name="Primary Rotation Axis", default='X')
diff --git a/rigify/legacy/rigs/biped/leg/__init__.py b/rigify/legacy/rigs/biped/leg/__init__.py
index 97241ead..bfa9f535 100644
--- a/rigify/legacy/rigs/biped/leg/__init__.py
+++ b/rigify/legacy/rigs/biped/leg/__init__.py
@@ -121,7 +121,7 @@ def add_parameters(params):
 
     """
     params.use_complex_leg = bpy.props.BoolProperty(name="Complex Leg Rig", default=True, description="Generate the full, complex leg rig with twist bones and rubber-hose controls")
-    params.bend_hint = bpy.props.BoolProperty(name="Bend Hint", default=True, description="Give IK chain a hint about which way to bend (useful for perfectly straight chains)")
+    params.bend_hint = bpy.props.BoolProperty(name="Bend Hint", default=True, description="Give IK chain a hint about which way to bend. Useful for perfectly straight chains")
 
     items = [('X', 'X', ''), ('Y', 'Y', ''), ('Z', 'Z', ''), ('-X', '-X', ''), ('-Y', '-Y', ''), ('-Z', '-Z', '')]
     params.primary_rotation_axis = bpy.props.EnumProperty(items=items, name="Primary Rotation Axis", default='X')