Added header comments to indicate the author(s) of original files.

Suggested by Sergey Sharybin through a code review of the branch.

The information was mostly recovered from the AUTHORS file [1] of the
stand-alone Freestyle package version 2.2.0.

[1] http://freestyle.cvs.sourceforge.net/viewvc/freestyle/freestyle/AUTHORS.TXT

release/scripts/freestyle/style_modules/Functions0D.py

@@ -16,6 +16,11 @@
 #
 # ##### END GPL LICENSE BLOCK #####
 
+#  Filename : Functions0D.py
+#  Authors  : Fredo Durand, Stephane Grabli, Francois Sillion, Emmanuel Turquin 
+#  Date     : 30/06/2005
+#  Purpose  : Functions (functors) to be used for 0D elements
+
 from Freestyle import Curvature2DAngleF0D, CurvePoint, ReadCompleteViewMapPixelF0D, \
     ReadSteerableViewMapPixelF0D, UnaryFunction0DDouble, UnaryFunction0DMaterial, \
     UnaryFunction0DVec2f

release/scripts/freestyle/style_modules/Functions1D.py

@@ -16,6 +16,11 @@
 #
 # ##### END GPL LICENSE BLOCK #####
 
+#  Filename : Functions1D.py
+#  Authors  : Fredo Durand, Stephane Grabli, Francois Sillion, Emmanuel Turquin 
+#  Date     : 08/04/2005
+#  Purpose  : Functions (functors) to be used for 1D elements
+
 from Freestyle import GetProjectedZF1D, IntegrationType, UnaryFunction1DDouble, integrate
 from Functions0D import pyDensityAnisotropyF0D, pyViewMapGradientNormF0D
 import string 

release/scripts/freestyle/style_modules/PredicatesB1D.py

@@ -16,6 +16,11 @@
 #
 # ##### END GPL LICENSE BLOCK #####
 
+#  Filename : PredicatesB1D.py
+#  Authors  : Fredo Durand, Stephane Grabli, Francois Sillion, Emmanuel Turquin 
+#  Date     : 08/04/2005
+#  Purpose  : Binary predicates (functors) to be used for 1D elements
+
 from Freestyle import BinaryPredicate1D, GetZF1D, IntegrationType, Nature, SameShapeIdBP1D, ZDiscontinuityF1D
 from Functions1D import pyViewMapGradientNormF1D
 

release/scripts/freestyle/style_modules/PredicatesU0D.py

@@ -16,6 +16,11 @@
 #
 # ##### END GPL LICENSE BLOCK #####
 
+#  Filename : PredicatesU0D.py
+#  Authors  : Fredo Durand, Stephane Grabli, Francois Sillion, Emmanuel Turquin 
+#  Date     : 08/04/2005
+#  Purpose  : Unary predicates (functors) to be used for 0D elements
+
 from Freestyle import Curvature2DAngleF0D, Nature, QuantitativeInvisibilityF0D, UnaryPredicate0D
 from Functions0D import pyCurvilinearLengthF0D
 

release/scripts/freestyle/style_modules/PredicatesU1D.py

@@ -16,6 +16,11 @@
 #
 # ##### END GPL LICENSE BLOCK #####
 
+#  Filename : PredicatesU1D.py
+#  Authors  : Fredo Durand, Stephane Grabli, Francois Sillion, Emmanuel Turquin 
+#  Date     : 08/04/2005
+#  Purpose  : Unary predicates (functors) to be used for 1D elements
+
 from Freestyle import Curvature2DAngleF0D, CurveNatureF1D, DensityF1D, GetCompleteViewMapDensityF1D, \
     GetDirectionalViewMapDensityF1D, GetOccludersF1D, GetProjectedZF1D, GetShapeF1D, GetSteerableViewMapDensityF1D, \
     IntegrationType, ShapeUP1D, TVertex, UnaryPredicate1D

release/scripts/freestyle/style_modules/logical_operators.py

@@ -16,6 +16,11 @@
 #
 # ##### END GPL LICENSE BLOCK #####
 
+#  Filename : logical_operators.py
+#  Authors  : Fredo Durand, Stephane Grabli, Francois Sillion, Emmanuel Turquin 
+#  Date     : 08/04/2005
+#  Purpose  : Logical unary predicates (functors) for 1D elements
+
 from Freestyle import UnaryPredicate1D
 
 class AndUP1D(UnaryPredicate1D):

release/scripts/freestyle/style_modules/parameter_editor.py

@@ -16,6 +16,11 @@
 #
 # ##### END GPL LICENSE BLOCK #####
 
+#  Filename : parameter_editor.py
+#  Authors  : Tamito Kajiyama
+#  Date     : 26/07/2010
+#  Purpose  : Interactive manipulation of stylization parameters
+
 import Freestyle
 import math
 import mathutils

release/scripts/freestyle/style_modules/shaders.py

@@ -16,6 +16,11 @@
 #
 # ##### END GPL LICENSE BLOCK #####
 
+#  Filename : shaders.py
+#  Authors  : Fredo Durand, Stephane Grabli, Francois Sillion, Emmanuel Turquin 
+#  Date     : 11/08/2005
+#  Purpose  : Stroke shaders to be used for creation of stylized strokes
+
 from Freestyle import AdjacencyIterator, Curvature2DAngleF0D, DensityF0D, GetProjectedZF0D, \
     Interface0DIterator, MaterialF0D, Nature, Noise, Normal2DF0D, Orientation2DF1D, \
     StrokeAttribute, StrokeShader, StrokeVertexIterator, ZDiscontinuityF0D

release/scripts/freestyle/style_modules/uniformpruning_zsort.py

@@ -16,6 +16,10 @@
 #
 # ##### END GPL LICENSE BLOCK #####
 
+#  Filename : uniformpruning_zsort.py
+#  Authors  : Fredo Durand, Stephane Grabli, Francois Sillion, Emmanuel Turquin 
+#  Date     : 08/04/2005
+
 from Freestyle import ChainSilhouetteIterator, ConstantColorShader, ConstantThicknessShader, IntegrationType, \
     Operators, QuantitativeInvisibilityUP1D, SamplingShader, Stroke, StrokeTextureShader
 from PredicatesB1D import pyZBP1D