oshmem: Fix tarball issue

Fixes open-mpi#1036

Author: igor-ivanov

oshmem/shmem/man/man3/Makefile.extra

@@ -178,5 +178,6 @@ shmem_api_man_pages = \
 
 if PROJECT_OSHMEM
 nodist_man_MANS += $(shmem_api_man_pages)
-EXTRA_DIST += $(shmem_api_man_pages:.3=.3in)
 endif  # PROJECT_OSHMEM
+EXTRA_DIST += $(shmem_api_man_pages:.3=.3in)
+