[gtkmm] Must include <iostream> or I get an error?

[Moses McKnight <moses gcecisp com>]

Hi,

Here's something which has bugged me off and on.  I have been slowly learning 
gtkmm over time and have run into this peculiarity now a couple of times (and 
forgot it and had to figure it out again!)  I find if I don't #include 
<iostream> (whether I'm using it or not) before including <gtkmm.h> and 
<libgnomeuimm.h> I get the following types of errors:

/usr/include/libintl.h:44: error: parse error before `__const'

It seems like before the errors may have been slightly different but similar and 
just as meaningless to me.  I'm currently using g++ 3.3 but this has happened 
through several compiler versions.

Is this a bug?  Has anyone else run into this?

Thanks,
Moses