add a disable function for coll module
Fix heterogeneous support

* redefine orte_process_name_t so it can be converted
  between host and network format as an opal_identifier_t
  aka uint64_t by the OPAL layer.
* correctly send OPAL_DSTORE_ARCH key
usnic: fix minor typo

Change harmless-but-weird comma to semicolon.  Found during code
review.
var: fix segv in deprecated file var show_help()

Ensure to include the new variable filename in the show_help() output
when we load a deprecated MCA param from a file.

Fixes #236
Mark all instances where atomic operations are used but their return value is unnecessary
Remove unnecessary includes from the datatype
Merge branch 'topic/atomic-cleanups'
Various minor cleanups.
Revert "Fix heterogeneous support"

Per the discussion at http://www.open-mpi.org/community/lists/devel/2014/10/16050.php

This reverts commit c9c5d4011bf6ea1ade1a5bd9b6a77f02157dc774.
pmi/s1: fix large keys

do not overwrite the PMI key when pushing a message that does
not fit within 255 bytes
Merge pull request #233 from ggouaillardet/rfc/coll_module_disable

Provide a symmetric behavior for the activation/deactivation of collective modules.
Adding a platform file for Darter NICS CrayXC30
Fix incorrect implementation of new MCA param mca_base_env_list - it was not picking up envars and forwarding them, but only worked if you explicitly set a value for the envar. Ensure it works for both direct and indirect launch modes. Remove stale code as this replaced orte_forward_envars. Ensure it doesn't get passed to the ORTE daemons.
Fix typo
btl sm: restore btl_sm_have_knem_support MCA param

Somehow, this MCA param was accidentally dropped after v1.6.5.  Thanks
to Gus Correa for bringing this matter to our attention.

Also moving some MCA params down from level 9 to levels 4/5.
btl sm: error if knem support is requested and cannot be activated

Restore the functionality to error out (and show a helpful message) if
knem support is requested by is either not compiled in or cannot be
activated.

Thanks to Gus Correa for bringing the matter to our attention.
Update the orterun man page
Fix building system: correct libltdl check for advise capability.