Bug#707957: g++-4.7 -m32 cannot find include files on kfreebsd-amd64

[Petr Salinger <Petr.Salinger@seznam.cz>]

> please find out why, -v shows you the directories searched. amd64 seems to be
> correct about the search path.

g++ -m64:
ignoring nonexistent directory "/usr/include/i386-kfreebsd-gnu/c++/4.7/."
ignoring nonexistent directory "/usr/local/include/x86_64-kfreebsd-gnu"
ignoring nonexistent directory 
"/usr/lib/gcc/x86_64-kfreebsd-gnu/4.7/../../../../x86_64-kfreebsd-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/include/c++/4.7
 /usr/include/x86_64-kfreebsd-gnu/c++/4.7
 /usr/include/c++/4.7/backward
 /usr/lib/gcc/x86_64-kfreebsd-gnu/4.7/include
 /usr/local/include
 /usr/lib/gcc/x86_64-kfreebsd-gnu/4.7/include-fixed
 /usr/include/x86_64-kfreebsd-gnu
 /usr/include
End of search list.

g++ -m32:
ignoring nonexistent directory "/usr/include/i386-kfreebsd-gnu/c++/4.7/32"
ignoring nonexistent directory "/usr/include/i386-kfreebsd-gnu/c++/4.7"
ignoring nonexistent directory "/usr/local/include/i386-kfreebsd-gnu"
ignoring nonexistent directory 
"/usr/lib/gcc/x86_64-kfreebsd-gnu/4.7/../../../../x86_64-kfreebsd-gnu/include"
ignoring nonexistent directory "/usr/include/i386-kfreebsd-gnu"
#include "..." search starts here:
#include <...> search starts here:
 /usr/include/c++/4.7
 /usr/include/c++/4.7/backward
 /usr/lib/gcc/x86_64-kfreebsd-gnu/4.7/include
 /usr/local/include
 /usr/lib/gcc/x86_64-kfreebsd-gnu/4.7/include-fixed
 /usr/include
End of search list.