removed lock around call to ingester.commit()
log message changes
Merge remote-tracking branch 'upstream/develop' into ingester
Merge remote-tracking branch 'upstream/develop' into ingester
updated AbstractFile text extractor classes to be thread safe
fixed some more non-thread-safe declarations in KeywordSearch module
Restored synchronization of IngestManager.isIngestRunning()
Merge pull request #624 from rcordovano/synch_ingest_running

Restored synchronization of IngestManager.isIngestRunning()
Merge pull request #619 from SynapticNulship/ingester

Ingester and text indexing thread safety update
Merge remote-tracking branch 'upstream/develop' into mt-3rdparty
FileTypeID module: thread-safety tweak and comments