[openib-general] [librdmacm] ABI file in not being created by cma module, but the user level library tries to use it

[Sean Hefty]

>SVN 7079 corrected this in file "librdmacm/src/cma.c" so that if the ABI was
>not available via "/sys/class/misc/rdma_cm/abi_version", we would assume that
>the ABI version was the latest version. (If all was not OK with this
>assumption in a specific execution instance, there would be downstream
>failures which would be caught).
>Unfortunately, SVN 7497 broke this fix.  The fix needs to be re-instated.

Yes - I inadvertently removed this fix when I removed libsysfs from the
librdmacm.  I will re-instate the fix.

- Sean