oshmem: Move help file for oshmem api one level up to

meet ompi structure

Signed-off-by: Igor Ivanov <Igor.Ivanov@itseez.com>

oshmem/shmem/Makefile.am

@@ -1,4 +1,4 @@
-# Copyright (c) 2013      Mellanox Technologies, Inc.
+# Copyright (c) 2013-2015 Mellanox Technologies, Inc.
 #                         All rights reserved.
 # $COPYRIGHT$
 #
@@ -9,4 +9,5 @@
 
 headers += shmem/shmem_api_logger.h \
            shmem/shmem_lock.h
-dist_oshmemdata_DATA += shmem/c/help-shmem-api.txt
+
+dist_oshmemdata_DATA += shmem/help-shmem-api.txt