[boost] WCHAR_MIN/MAX not defined for NetBSD in integer_traits.h

From: felix zaslavskiy (felix_at_[hidden])
Date: 2003-06-23 17:27:43

NetBSD does not have WCHAR_MIN/MAX using gcc3.3 basicaly the min/max for 
wchar_t is INT_MIN/MAX similarly to freeBSD

I encountered this problem when trying to compile boost.python which 
failed because of this problem.