path with spaces in config.pl

Hi,

I would like report an observations regarding compilation with msvc++
I was trying to compile with nls=>'C:\Program Files\GnuWin32\' (of course
with GetText installed and everything)
The build process breaks on link with missing "Program.obj" error. When I
changed nls='C:\prog\pgsql\depend\gettext' everything compiled just fine.

Perhaps we should document this.

Regards,
Gevik.