ras/alps: fix alps support for CLE 5.x

Cray moved the apstat command on CLE 5.x to /opt/cray/alps/../bin and
moved a configuration file. This commit adds support for both of these
changes.

cmr=v1.8.1
OSHMEM: add support for profiling API

use weak symbols, based on http://www.open-mpi.org/community/lists/devel/2014/03/14429.php
fixed by Roman, reviewed by Igor/Miked

cmr=v1.8.1:reviewer=ompi-rm1.8
OSHMEM: usability fix for 32bit systems

set default memheap start address to use one returned from memallocator
on 32bit system kernel may have issue because of this:

 CONFIG_STRICT_DEVMEM kernel option which "prevents user space access to physical memory above 1MB"

fixed by Roman, reviewed by Igor/Miked

cmr=v1.8.1:reviewer=ompi-rm1.8