more comments about new build system

[Lisandro Dalcin]

If one of the goals of the new build system is to be more symmetric
with the GNU model, in order to make life easier for packagers, so I
think the '$PETSC_PREFIX/conf' location should be renamed, perhaps to
'$PETSC_PREFIX/share/petsc'. I believe 'conf' is not a 'standard'
location.



-- 
Lisandro Dalcín
---------------
Centro Internacional de Métodos Computacionales en Ingeniería (CIMEC)
Instituto de Desarrollo Tecnológico para la Industria Química (INTEC)
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
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