Cleanup: BLO: move validate code into own header.

Does not make sense to keep that with BLO_writefile.h, this can also be
used by read code, and some other parts of Blender (like ed_undo.c
currently)...

source/blender/blenloader/BLO_blend_validate.h

@@ -0,0 +1,41 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#ifndef __BLO_BLEND_VALIDATE_H__
+#define __BLO_BLEND_VALIDATE_H__
+
+/** \file BLO_blend_validate.h
+ *  \ingroup blenloader
+ *  \brief Utils ensuring .blend file (i.e. Main) is in valid state during write and/or read process.
+ */
+
+struct Main;
+struct ReportList;
+
+bool BLO_main_validate_libraries(struct Main *bmain, struct ReportList *reports);
+
+#endif

source/blender/blenloader/BLO_writefile.h

@@ -44,6 +44,4 @@ extern bool BLO_write_file(
 extern bool BLO_write_file_mem(
         struct Main *mainvar, struct MemFile *compare, struct MemFile *current, int write_flags);
 
-bool BLO_main_validate_libraries(struct Main *bmain, struct ReportList *reports);
-
 #endif

source/blender/blenloader/CMakeLists.txt

@@ -64,6 +64,7 @@ set(SRC
 	intern/writefile.c
 
 	BLO_blend_defs.h
+	BLO_blend_validate.h
 	BLO_readfile.h
 	BLO_undofile.h
 	BLO_writefile.h

source/blender/blenloader/intern/blend_validate.c

@@ -46,8 +46,8 @@
 #include "BKE_main.h"
 #include "BKE_report.h"
 
+#include "BLO_blend_validate.h"
 #include "BLO_readfile.h"
-#include "BLO_writefile.h"
 
 #include "readfile.h"
 

source/blender/blenloader/intern/readfile.c

@@ -171,9 +171,9 @@
 #include "NOD_common.h"
 #include "NOD_socket.h"
 
+#include "BLO_blend_defs.h"
 #include "BLO_readfile.h"
 #include "BLO_undofile.h"
-#include "BLO_blend_defs.h"
 
 #include "RE_engine.h"
 

source/blender/blenloader/intern/writefile.c

@@ -188,10 +188,11 @@
 #endif
 
 
-#include "BLO_writefile.h"
+#include "BLO_blend_defs.h"
+#include "BLO_blend_validate.h"
 #include "BLO_readfile.h"
 #include "BLO_undofile.h"
-#include "BLO_blend_defs.h"
+#include "BLO_writefile.h"
 
 #include "readfile.h"
 

source/blender/editors/undo/ed_undo.c

@@ -56,7 +56,7 @@
 #include "BKE_workspace.h"
 #include "BKE_paint.h"
 
-#include "BLO_writefile.h"
+#include "BLO_blend_validate.h"
 
 #include "ED_gpencil.h"
 #include "ED_render.h"