Fixing OSHMEM compiler warnings when --enable-mpi-thread-multiple is set

This commit was SVN r29249.

oshmem/mca/spml/ikrit/spml_ikrit.h

@@ -56,7 +56,7 @@ struct mxm_peer {
     opal_list_item_t    super;
     mxm_conn_h          mxm_conn;
     int                 pe;
-    uint32_t            n_active_puts;
+    int32_t             n_active_puts;
     int                 need_fence;
     /* if >= 0, data will be send to pe_relay which will forward it to destination pe */
     int                 pe_relay;   
@@ -77,9 +77,9 @@ struct mca_spml_ikrit_t {
     mxm_mq_h mxm_mq;
     mxm_peer_t **mxm_peers;
 
-    uint32_t n_active_puts;
-    uint32_t n_active_gets;
-    uint32_t n_mxm_fences;
+    int32_t n_active_puts;
+    int32_t n_active_gets;
+    int32_t n_mxm_fences;
 
     int priority; /* component priority */
     int free_list_num; /* initial size of free list */

oshmem/mca/spml/yoda/spml_yoda.h

@@ -72,7 +72,7 @@ struct mca_spml_yoda_t {
     /* free lists */
     ompi_free_list_t rdma_frags;
     /* number of outstanding put requests */
-    uint32_t n_active_puts;
+    int32_t n_active_puts;
     bool enabled;
     struct yoda_btl *btl_type_map;
     int n_btls;

oshmem/mca/spml/yoda/spml_yoda_getreq.h

@@ -24,7 +24,7 @@
 BEGIN_C_DECLS
 
 struct mca_spml_yoda_getreq_parent {
-    uint32_t active_count;
+    int32_t active_count;
 };
 
 struct mca_spml_yoda_get_request_t {