Ensure to have a PARAM_CONFIG_FILES (I don't know if

PARAM_WINDOWS_FILES is a mistake or not).  Fixes trac:2079.

This commit was SVN r22171.

The following Trac tickets were found above:
  Ticket 2079 --> https://svn.open-mpi.org/trac/ompi/ticket/2079

opal/mca/installdirs/windows/configure.params

@@ -13,3 +13,4 @@
 
 PARAM_WINDOWS_PRIORITY=100
 PARAM_WINDOWS_FILES="Makefile"
+PARAM_CONFIG_FILES="Makefile"