Replaces all occurrences of ftell and fseek with ftello and fseeko, respectively. This matters on non-win32 where only these names are altered by the _FILE_OFFSET_BITS define. Win32 still just maps the funcs to ftelli64/fseeki64.
Also add some File::GetSize I had skipped in my last commit.
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6515 8ced0084-cf51-0410-be5f-012b33b47a6e
Shawn Hoffman