Move 2.6x versioning code to own file

Summary:
Makes readfile.c more clear and easier to navigate in.
We would need to do such a move when we'll do 2.70 bump
anyway. So better be prepared.

In fact, as soon 2.70 bumo is done i would think we'd
better create versioning_270 file and do version code
there. Otherwise readfile.c will grow up dramatically
again.

Reviewers: brecht, campbellbarton

Reviewed By: brecht

Differential Revision: http://developer.blender.org/D60

source/blender/blenloader/CMakeLists.txt

@@ -46,6 +46,7 @@ set(SRC
 	intern/runtime.c
 	intern/undofile.c
 	intern/versioning_250.c
+	intern/versioning_260.c
 	intern/versioning_defaults.c
 	intern/versioning_legacy.c
 	intern/writefile.c

source/blender/blenloader/intern/readfile.h

@@ -34,6 +34,7 @@
 #define __READFILE_H__
 
 #include "zlib.h"
+#include "DNA_windowmanager_types.h"  /* for ReportType */
 
 struct OldNewMap;
 struct MemFile;
@@ -43,6 +44,7 @@ struct Object;
 struct PartEff;
 struct View3D;
 struct bNodeTree;
+struct Key;
 
 typedef struct FileData {
 	// linked list of BHeadN's
@@ -145,6 +147,8 @@ char *bhead_id_name(FileData *fd, BHead *bhead);
 
 /* do versions stuff */
 
+void blo_reportf_wrap(struct ReportList *reports, ReportType type, const char *format, ...) ATTR_PRINTF_FORMAT(3, 4);
+
 void blo_do_versions_oldnewmap_insert(struct OldNewMap *onm, void *oldaddr, void *newaddr, int nr);
 void *blo_do_versions_newlibadr(struct FileData *fd, void *lib, void *adr);
 void *blo_do_versions_newlibadr_us(struct FileData *fd, void *lib, void *adr);
@@ -152,9 +156,11 @@ void *blo_do_versions_newlibadr_us(struct FileData *fd, void *lib, void *adr);
 struct PartEff *blo_do_version_give_parteff_245(struct Object *ob);
 void blo_do_version_old_trackto_to_constraints(struct Object *ob);
 void blo_do_versions_view3d_split_250(struct View3D *v3d, struct ListBase *regions);
+void blo_do_versions_key_uidgen(struct Key *key);
 
 void blo_do_versions_pre250(struct FileData *fd, struct Library *lib, struct Main *main);
 void blo_do_versions_250(struct FileData *fd, struct Library *lib, struct Main *main);
+void blo_do_versions_260(struct FileData *fd, struct Library *lib, struct Main *main);
 
 #endif