Medium: Build: add --compat-habindir option for HA_BIN backward compatibility

This configure option is to be used when the package is used
for the existing Heartbeat stack.

As of the commit below, HA_BIN directory has been changed to
more appropriate location but it introduces an incompatibility
so the Heartbeat stack would fail to start.
  https://github.com/ClusterLabs/resource-agents/pull/285

See also:
 https://github.com/ClusterLabs/resource-agents/issues/330
Merge pull request #484 from kskmori/compat-ha-bin

Build: add --compat-habindir option for HA_BIN backward compatibility