upstart: fix ceph-crush-location default

Behave if it is not specified on ceph.conf.  (init-ceph also falls back
to the default.)

Fixes: #6698
Signed-off-by: Sage Weil <sage@inktank.com>
Revert "fix -Wgnu-designator warnings"

Struct initialization using dot notation as in C99, but that happens to
not be valid C++, although apparently in C++11 it is valid. We'll need a
way to keep clang from throwing warnings at this initialization style,
either using some macros to detect the comiler environment, or perhaps
moving struct initialization to a C file rather than C++.

This reverts commit 6efc2b54d5ce85fcb4b66237b051bcbb5072e6a3.

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
Merge pull request #812 from ceph/revert-struct-init

Revert "fix -Wgnu-designator warnings"
Merge pull request #803 from ceph/wip-6698

upstart: fix ceph-crush-location default

Reviewed-by: Sage Weil <sage@inktank.com>
Merge remote-tracking branch 'upstream/master'