ruby 2.0 can not require or load the source file with non-ascii path name
Sorry for my poor english:)
I attached the patch to fix the problem, but I don't know is it the right way.
include/ruby/intern.h change the declaration of "rb_load_file"；change parameter from char to VALUE
*load.c change the caller
*ruby.c change the "rb_load_file"'s implement
*win32/file.c change the win32 api call from ANSI type to UNICODE type.