install/dependency/dependency_redhat.py: Moved memcached and libmemcached-devel installations before postgresql installations to fix bug in which script would only attempt to install from pgdg91 repo.
install/dependency/dependency_redhat.py: Moved memcached and libmemcached-devel installations before postgresql installations to fix bug in which script would only attempt to install from pgdg91 repo.

csdl/makahiki,yongwen/makahiki,csdl/makahiki,csdl/makahiki,csdl/makahiki,yongwen/makahiki,jtakayama/makahiki-draft,yongwen/makahiki,yongwen/makahiki,jtakayama/makahiki-draft,jtakayama/makahiki-draft,jtakayama/makahiki-draft