Hey folks

Now that we have multiple projects sharing a build system, we need to be 
careful how we name our #if's. For example, using:

#ifdef MCA_FOO_BAR
#define MCA_FOO_BAR
...

might have been fine in the past, but you wind up clobbering another project 
that also has a "foo_bar" component. Please prefix your definitions with the 
project name, like:

#ifdef OPAL_MCA_FOO_BAR
#define OPAL_MCA_FOO_BAR

This will help to reduce a number of headaches
Ralph


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