[Boost-build] [config] disabling hash_map/set by #define BOOST_NO_HASH

From: Juergen Hunold (juergen.hunold_at_[hidden])
Date: 2008-08-20 07:30:44

Hi !

After upgrading to gcc-4.3 I got annoyed by the myriads of deprecated warnings 
about "hash_map" and "hash_set" especially from the BGL code.
I tried to get rid of those by simply adding #define BOOST_NO_HASH to the 
command line and it worked.
Unfortunately, it seems that trunk config does not detect hash support with 
msvc-8.0 and this compiler then bailed out with a macro redefinition error at 
config/suffix.hpp :-((
Patch to add a check for an already defined BOOST_NO_HASH (and for 
BOOST_NO_SLIST) attached.
Comments ? Ok to commit ? Better ideas to disable hash support ?

Yours,

Jürgen 
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