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
Merge pull request #619 from SynapticNulship/ingester

Ingester and text indexing thread safety update