app/file: Rename gimpfile.h to gimp-file.h and fix include guards

The source filename convention would indicate that gimpfile.h
	holds code for the GimpFile object. Rename it to gimp-file.h
	to make clear that it doesn't.

app/actions/file-commands.c

@@ -40,7 +40,7 @@
 #include "file/file-procedure.h"
 #include "file/file-save.h"
 #include "file/file-utils.h"
-#include "file/gimpfile.h"
+#include "file/gimp-file.h"
 
 #include "widgets/gimpactiongroup.h"
 #include "widgets/gimpdialogfactory.h"

app/dialogs/file-open-dialog.c

@@ -35,7 +35,7 @@
 
 #include "file/file-open.h"
 #include "file/file-utils.h"
-#include "file/gimpfile.h"
+#include "file/gimp-file.h"
 
 #include "widgets/gimpfiledialog.h"
 #include "widgets/gimphelp-ids.h"

app/dialogs/file-save-dialog.c

@@ -37,7 +37,7 @@
 #include "file/file-procedure.h"
 #include "file/file-save.h"
 #include "file/file-utils.h"
-#include "file/gimpfile.h"
+#include "file/gimp-file.h"
 
 #include "widgets/gimpactiongroup.h"
 #include "widgets/gimpfiledialog.h"

app/file/file-open.c

@@ -68,7 +68,7 @@
 #include "file-open.h"
 #include "file-procedure.h"
 #include "file-utils.h"
-#include "gimpfile.h"
+#include "gimp-file.h"
 
 #include "gimp-intl.h"
 

app/file/file-save.c

@@ -59,7 +59,7 @@
 
 #include "file-save.h"
 #include "file-utils.h"
-#include "gimpfile.h"
+#include "gimp-file.h"
 
 #include "gimp-intl.h"
 

app/file/gimp-file.h

@@ -1,7 +1,7 @@
 /* GIMP - The GNU Image Manipulation Program
  * Copyright (C) 1995 Spencer Kimball and Peter Mattis
  *
- * file.h
+ * gimp-file.h
  * Copyright (C) 2009 Martin Nordholts <martinn@src.gnome.org>
  *
  * This program is free software: you can redistribute it and/or modify
@@ -18,8 +18,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __FILE_H__
-#define __FILE_H__
+#ifndef __GIMP_FILE_H__
+#define __GIMP_FILE_H__
 
 
 #define GIMP_FILE_SAVE_LAST_URI_KEY   "gimp-file-save-last-uri"
@@ -27,4 +27,4 @@
 #define GIMP_FILE_SAVE_A_COPY_URI_KEY "gimp-file-save-a-copy-uri"
 
 
-#endif /* __FILE_H__ */
+#endif /* __GIMP_FILE_H__ */

app/widgets/gimpfiledialog.c

@@ -37,7 +37,7 @@
 #include "config/gimpguiconfig.h"
 
 #include "file/file-utils.h"
-#include "file/gimpfile.h"
+#include "file/gimp-file.h"
 
 #include "pdb/gimppdb.h"