apachesolr 6.1.0-rc5-cocomore-2

mkalkbrenner:

Removed contrib modules that are no longer part apachesolr-6.x-1.x. They have been moved to dedicated projects or became part of the core module.

When updating your server it's important to remove these folders to avoid php errors like redeclared functions:

• apachesolr/contrib/apachesolr_attachments
• apachesolr/contrib/apachesolr_mlt
• apachesolr/contrib/apachesolr_multisitesearch

apachesolr_mlt is now integrated into apachesolr itself.
apachesolr_attachments and /apachesolr_multisitesearch became dedicated modules.