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    [Merge][Bugfix] r7422 from branches/release-cmake-2.2: Prevent definition of... · c8eb081a
    Markus Blatt authored
    [Merge][Bugfix] r7422 from branches/release-cmake-2.2: Prevent definition of HAVE_BOOST without value due to race conditions i
    n some autoconf versions.
    
    For some autoconf versions there was a race condition between ax_boost_base.m4 a
    nd dune_boost_base.m4 resulting in HAVE_BOOST being defined with no value (inste
    ad of ENABLE_BOOST). For others there were even two definitions of it (one with 
    and one without value). 
    
    This patch renames the symbol being defined in dune_boost_base.m4 to HAVE_DUNE_B
    OOST and defines a value for it if boost is found.
    
    
    [[Imported from SVN: r7424]]
    c8eb081a