add doxygen stuff to make it pick up the docs

This commit was SVN r747.

src/mca/lam/oob/oob.h

@@ -2,6 +2,7 @@
  *
  * $HEADER$
  */
+/** @file **/
 
 /** 
  *  \brief Out of Band Messaging Interface

src/mca/lam/pcm/pcm.h

@@ -2,6 +2,7 @@
  *
  * $HEADER$
  */
+/** @file **/
 
 /** 
  *  \brief LAM/MPI Interface for Parallel Job & Process Control (pcm)

src/mca/lam/registry/registry.h

@@ -2,6 +2,7 @@
  *
  * $HEADER$
  */
+/** @file **/
 
 /**
  *  \brief Publish/Subscribe-style global registry database infrastructure