Cleanup: sort forward declarations of enum & struct

Done using:
  source/tools/utils_maintenance/c_sort_blocks.py

source/blender/render/extern/include/RE_bake.h

@@ -33,8 +33,8 @@
 #define __RE_BAKE_H__
 
 struct ImBuf;
-struct Render;
 struct Mesh;
+struct Render;
 
 typedef struct BakeImage {
 	struct Image *image;

source/blender/render/extern/include/RE_engine.h

@@ -39,8 +39,7 @@
 
 #include "BLI_threads.h"
 
-struct bNode;
-struct bNodeTree;
+struct BakePixel;
 struct Object;
 struct Render;
 struct RenderData;
@@ -50,7 +49,8 @@ struct RenderLayer;
 struct RenderResult;
 struct ReportList;
 struct Scene;
-struct BakePixel;
+struct bNode;
+struct bNodeTree;
 
 /* External Engine */
 

source/blender/render/extern/include/RE_pipeline.h

@@ -35,8 +35,7 @@
 #include "DNA_listBase.h"
 #include "DNA_vec_types.h"
 
-struct bMovieHandle;
-struct bNodeTree;
+struct EnvMap;
 struct Image;
 struct ImageFormatData;
 struct Main;
@@ -47,8 +46,9 @@ struct RenderResult;
 struct ReportList;
 struct Scene;
 struct SceneRenderLayer;
-struct EnvMap;
 struct StampData;
+struct bMovieHandle;
+struct bNodeTree;
 
 /* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
 /* this include is what is exposed of render to outside world */

source/blender/render/extern/include/RE_shader_ext.h

@@ -194,11 +194,11 @@ typedef struct BakeImBufuserData {
 } BakeImBufuserData;
 
 /* node shaders... */
-struct Tex;
-struct MTex;
 struct ImBuf;
 struct ImagePool;
+struct MTex;
 struct Object;
+struct Tex;
 
 /* this one uses nodes */
 int multitex_ext(struct Tex *tex,
@@ -222,8 +222,8 @@ void RE_instance_get_particle_info(struct ObjectInstanceRen *obi, float *index,
 float RE_fresnel_dielectric(float incoming[3], float normal[3], float eta);
 
 /* shaded view and bake */
-struct Render;
 struct Image;
+struct Render;
 
 int RE_bake_shade_all_selected(struct Render *re, int type, struct Object *actob, short *do_update, float *progress);
 struct Image *RE_bake_shade_get_image(void);

source/blender/render/intern/include/envmap.h

@@ -42,9 +42,9 @@
  * (initrender.c)
  */
 
+struct ImagePool;
 struct Render;
 struct TexResult;
-struct ImagePool;
 
 void make_envmaps(struct Render *re);
 int envmaptex(struct Tex *tex, const float texvec[3], float dxt[3], float dyt[3], int osatex, struct TexResult *texres, struct ImagePool *pool, const bool skip_image_load);

source/blender/render/intern/include/occlusion.h

@@ -34,8 +34,8 @@
 #define __OCCLUSION_H__
 
 struct Render;
-struct ShadeInput;
 struct RenderPart;
+struct ShadeInput;
 struct ShadeSample;
 
 void make_occ_tree(struct Render *re);

source/blender/render/intern/include/render_result.h

@@ -40,6 +40,8 @@
 #define RR_ALL_LAYERS	NULL
 #define RR_ALL_VIEWS	NULL
 
+struct ColorManagedDisplaySettings;
+struct ColorManagedViewSettings;
 struct ImBuf;
 struct ListBase;
 struct Render;
@@ -49,8 +51,6 @@ struct RenderLayer;
 struct RenderResult;
 struct Scene;
 struct rcti;
-struct ColorManagedDisplaySettings;
-struct ColorManagedViewSettings;
 
 /* New */
 

source/blender/render/intern/include/render_types.h

@@ -53,18 +53,18 @@
 #include "BLI_sys_types.h" // for intptr_t support
 
 struct EvaluationContext;
-struct Object;
-struct MemArena;
-struct VertTableNode;
-struct VlakTableNode;
 struct GHash;
+struct ImagePool;
+struct Main;
+struct MemArena;
+struct Object;
 struct ObjectInstanceRen;
-struct RayObject;
 struct RayFace;
+struct RayObject;
 struct RenderEngine;
 struct ReportList;
-struct Main;
-struct ImagePool;
+struct VertTableNode;
+struct VlakTableNode;
 
 #define TABLEINITSIZE 1024
 
@@ -407,8 +407,8 @@ struct halosort {
 };
 
 /* ------------------------------------------------------------------------- */
-struct Material;
 struct ImagePool;
+struct Material;
 
 typedef struct RadFace {
 	float unshot[3], totrad[3];

source/blender/render/intern/include/rendercore.h

@@ -40,12 +40,12 @@
 
 #include "NOD_composite.h"
 
+struct RayObject;
+struct RenderLayer;
+struct RenderPart;
 struct ShadeInput;
 struct ShadeResult;
 struct World;
-struct RenderPart;
-struct RenderLayer;
-struct RayObject;
 
 /* ------------------------------------------------------------------------- */
 

source/blender/render/intern/include/renderdatabase.h

@@ -37,21 +37,21 @@
 extern "C" {
 #endif
 
-struct Object;
-struct VlakRen;
-struct VertRen;
+struct CustomData;
 struct HaloRen;
-struct Main;
-struct Material;
-struct Render;
+struct Isect;
 struct MCol;
 struct MTFace;
-struct CustomData;
-struct StrandBuffer;
-struct StrandRen;
+struct Main;
+struct Material;
+struct Object;
 struct ObjectInstanceRen;
 struct RadFace;
-struct Isect;
+struct Render;
+struct StrandBuffer;
+struct StrandRen;
+struct VertRen;
+struct VlakRen;
 
 #define RE_QUAD_MASK	0x7FFFFFF
 #define RE_QUAD_OFFS	0x8000000

source/blender/render/intern/include/shadbuf.h

@@ -64,8 +64,8 @@ float shadow_halo(LampRen *lar, const float p1[3], const float p2[3]);
  * Irregular shadowbuffer
  */
 
-struct MemArena;
 struct APixstr;
+struct MemArena;
 
 void ISB_create(RenderPart *pa, struct APixstr *apixbuf);
 void ISB_free(RenderPart *pa);

source/blender/render/intern/include/shading.h

@@ -26,16 +26,16 @@
  */
 
 
+struct Isect;
+struct LampRen;
+struct ObjectInstanceRen;
+struct PixStr;
+struct RenderLayer;
+struct RenderPart;
 struct ShadeInput;
 struct ShadeResult;
-struct RenderPart;
-struct RenderLayer;
-struct PixStr;
-struct LampRen;
-struct VlakRen;
 struct StrandPoint;
-struct ObjectInstanceRen;
-struct Isect;
+struct VlakRen;
 
 /* shadeinput.c */
 

source/blender/render/intern/include/sss.h

@@ -53,8 +53,8 @@ void scatter_tree_free(ScatterTree *tree);
 
 /* Internal renderer API */
 
-struct Render;
 struct Material;
+struct Render;
 
 void make_sss_tree(struct Render *re);
 void sss_add_points(Render *re, float (*co)[3], float (*color)[3], float *area, int totpoint);

source/blender/render/intern/include/strand.h

@@ -28,17 +28,17 @@
 #ifndef __STRAND_H__
 #define __STRAND_H__
 
-struct StrandVert;
-struct StrandRen;
-struct StrandBuffer;
-struct ShadeSample;
-struct StrandPart;
-struct Render;
-struct ZSpan;
-struct ObjectInstanceRen;
-struct StrandSurface;
 struct DerivedMesh;
+struct ObjectInstanceRen;
 struct ObjectRen;
+struct Render;
+struct ShadeSample;
+struct StrandBuffer;
+struct StrandPart;
+struct StrandRen;
+struct StrandSurface;
+struct StrandVert;
+struct ZSpan;
 
 typedef struct StrandPoint {
 	/* position within segment */

source/blender/render/intern/include/texture.h

@@ -64,12 +64,12 @@
 	}                                                                         \
 
 struct HaloRen;
-struct ShadeInput;
-struct TexResult;
-struct Tex;
-struct Image;
 struct ImBuf;
+struct Image;
 struct ImagePool;
+struct ShadeInput;
+struct Tex;
+struct TexResult;
 
 /* texture.h */
 

source/blender/render/intern/include/zbuf.h

@@ -33,14 +33,14 @@
 #ifndef __ZBUF_H__
 #define __ZBUF_H__
 
-struct RenderPart;
-struct RenderLayer;
+struct APixstr;
+struct APixstrand;
 struct LampRen;
 struct ListBase;
-struct ZSpan;
-struct APixstrand;
-struct APixstr;
+struct RenderLayer;
+struct RenderPart;
 struct StrandShadeCache;
+struct ZSpan;
 
 void fillrect(int *rect, int x, int y, int val);