Handling of utf-8 files

[Md Abdur Rahim]

There's seems like that builder can't read Jamfile properly in windows, because of an extra BOM signature in text file. Which is some kind of standard on windows platform.

So in Visual Studio I see something like this: '1>rule ´╗┐exe unknown in module Jamfile</c:/some/path/to/project/folder>.'

Setting ANSI fixed it though

[Md Abdur Rahim]

There are is a WORD at the beginning (0xFFEF)