LUCENE-6134: fix typos: wether->whether, neccessary->necessary, initalize->initialize, specifed->specified, etc. (thanks Ahmet Arslan\!) (merged trunk r1647795)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1647797 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6885: Add core name to RecoveryThread name

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1647801 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6879: Have an option to disable autoAddReplicas temporarily for all collections. (merged trunk r1647811)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1647812 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6851: Scripts to help install and run Solr as a service on Linux

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1647813 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6867: SolrCLI should check for existence before creating a new core/collection, more user-friendly error reporting (no stack trace), and the ability to pass a directory when using bin/solr to create a core or collection

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1647815 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6866: schemaless example should create core/collection named gettingstarted

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1647816 13f79535-47bb-0310-9956-ffa450edef68