Hi Tom,

According to your comments in "[PATCH] Add CTF support to GDB [1/4]
Add "-ctf" to tsave command".
I make this patch to add fseek to ui-file.  Please help me review it.

And stdio_file_fseek has a place different from the other stdio_file
functions.  It check the return of fseek.  If it got error, it will
throw error.
If you think it is OK, I will post patch for other stdio_file functions.
If not, it will update this patch.

Thanks,
Hui

2012-12-06  Hui Zhu  <hui_zhu@mentor.com>

	* ui-file.c (ui_file): Add to_fseek.
	(ui_file_new): Call set_ui_file_fseek.
	(null_file_fseek, ui_file_fseek, set_ui_file_fseek,
	 stdio_file_fseek): New functions.
	(stdio_file_new): Call set_ui_file_fseek.
	* ui-file.h (ui_file_fseek_ftype): New typedef.
	(set_ui_file_fseek, ui_file_fseek): New externs.