mca_base_param_find should be exported.

This commit was SVN r8534.

opal/mca/base/mca_base_param.c

@@ -531,6 +531,7 @@ char *mca_base_param_environ_variable(const char *type,
 /*
  * Find the index for an MCA parameter based on its names.
  */
+OMPI_DECLSPEC
 int mca_base_param_find(const char *type_name, const char *component_name, 
                         const char *param_name) 
 {