[svn-r4680] Purpose:

Code cleanup
Description:
    Property that H5P(g|s)et_hyper_cache uses is no longer in use inside the
    library.
Solution:
    Removed H5P(g|s)et_hyper_cache API functions, except when backward
    compatibility is turned on.  When backward compatibility is turned on,
    the property is defined by the library, but unused internally.
Platforms tested:
    FreeBSD 4.4 (sleipnir)

c++/src/H5DxferProp.cpp

@@ -93,6 +93,7 @@ bool DSetMemXferPropList::getPreserve() const
    }
 }
 
+#ifdef H5_WANT_H5_V1_4_COMPAT
 // Indicates whether to cache hyperslab blocks during I/O
 void DSetMemXferPropList::setHyperCache( bool cache, unsigned limit ) const
 {
@@ -119,6 +120,7 @@ void DSetMemXferPropList::getHyperCache( bool& cache, unsigned& limit ) const
    else
       cache = false;
 }
+#endif /* H5_WANT_H5_V1_4_COMPAT */
 
 // Sets B-tree split ratios for a dataset transfer property list 
 void DSetMemXferPropList::setBtreeRatios( double left, double middle, double right ) const