Issue #2373835 by helmo | realityloop: 3.x doesn't currently install.
Rename makefiles to .make extension

The previous .build extension started causing trouble since Drush make became more strict about the filename.

See: https://www.drupal.org/node/2373835#comment-9333915 and https://github.com/drush-ops/drush/issues/983
Update openatrium2 test platform to new tag

The old version was failing on the download of fullcalendar https://www.drupal.org/node/2333881
Remove openatrium2 from testcase, build fails too often on external issues
Nginx: Add the fix for known problem with files/imagecache in legacy D6 sites (again).
clarify traces in site_data module
revert previous commit, it's too noisy
Remove legacy drush load for site data example module.
Add post_verify hook for site_data module.
Add server data example module, which doesn't currently work.
Split arrays and hooks to alter chmod and chgrp file operations.
remove dead code: $base_dir is not used anywhere in that function
add debugging: when no service type is specified from the frontend, yell a warning
silence the last warning, it's actually not one

a missing --hook_service_type is not a warning, it just means the
service is disabled.
clarify little debugging markers
don't allow d() to run before drush is fully initialized

we add safety check so that we don't get caught running d() before
drush is fully initialized. otherwise, the proper services hooks may
not be properly declared and found by drush, so the object cache
($instances) would be initialised with incomplete data.

it is possible that more initialisation we need happens after
DRUSH_BOOTSTRAP_NONE, but this is already better than nothing.

it took me and ergonlogic three freaking full days of headbanging on
keyboards to figure that stuff out.
Nginx: Add missing variables in subdirectory config template.
Nginx: Fix spacing
Nginx: Helper locations to avoid 404 on legacy images paths (subdir only)
Improve debug messages in Config classes.