Some shmem Windows updates. I'm not sure if this makes a difference. Shiqing - can you please test?.

This commit was SVN r25591.

opal/mca/shmem/windows/shmem_windows_module.c

@@ -247,7 +247,6 @@ static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t
 }
 
 /* ////////////////////////////////////////////////////////////////////////// */
-/* SKG will not compile, but it's a start */
 static int
 segment_create(opal_shmem_ds_t *ds_buf,
                const char *file_name,
@@ -282,7 +281,7 @@ segment_create(opal_shmem_ds_t *ds_buf,
         *temp2 = '/';
     }
     /* update path change in ds_buf */
-    memcpy(ds_buf->seg_name, temp1, OPAL_PATH_MAX);
+    memcpy(ds_buf->seg_name, file_name, OPAL_PATH_MAX);
     /* relase the temporary file name */
     free(temp1);  /* relase the temporary file name */
 
@@ -297,7 +296,7 @@ segment_create(opal_shmem_ds_t *ds_buf,
                                    /* size: low 32-bits */
                                    (DWORD)real_size,
                                    /* name of map object */
-                                   ds_buf->seg_name);
+                                   temp1);
     if (NULL == hMapObject) {
         rc = GetLastError();
         goto out;
@@ -495,16 +494,6 @@ segment_unlink(opal_shmem_ds_t *ds_buf)
          ds_buf->seg_name)
     );
 
-    if (-1 == unlink(ds_buf->seg_name)) {
-        int err = errno;
-        char hn[MAXHOSTNAMELEN];
-        gethostname(hn, MAXHOSTNAMELEN - 1);
-        hn[MAXHOSTNAMELEN - 1] = '\0';
-        opal_show_help("help-opal-shmem-windows.txt", "sys call fail", 1, hn,
-                       "unlink(2)", ds_buf->seg_name, strerror(err), err);
-        return OPAL_ERROR;
-    }
-
     /* don't completely reset the opal_shmem_ds_t.  in particular, only reset
      * the id and flip the invalid bit.  size and name values will remain valid
      * across unlinks. other information stored in flags will remain untouched.