added new codec to HashingIndexor, Indexor, LuceneUtils and ParallelIndexer, updated to Lucene 4.2.1

git-svn-id: http://lire.googlecode.com/svn/trunk@100 f280a053-6817-128d-8a7e-cdf98506035a
patches + in-memory caching for GenericFastImageSearcher.java

git-svn-id: http://lire.googlecode.com/svn/trunk@101 f280a053-6817-128d-8a7e-cdf98506035a
Merge changes from GoogleCode changeset r101.

Merge remote-tracking branch 'upstream/master'

Conflicts:
	.gitignore
	.travis.yml
	pom.xml
	src/main/java/net/semanticmetadata/lire/ImageSearcherFactory.java
	src/main/java/net/semanticmetadata/lire/clustering/ParallelKMeans.java
	src/main/java/net/semanticmetadata/lire/imageanalysis/AutoColorCorrelogram.java
	src/main/java/net/semanticmetadata/lire/imageanalysis/CEDD.java
	src/main/java/net/semanticmetadata/lire/imageanalysis/LuminanceLayout.java
	src/main/java/net/semanticmetadata/lire/imageanalysis/RotationInvariantLocalBinaryPatterns.java
	src/main/java/net/semanticmetadata/lire/imageanalysis/mpeg7/EdgeHistogramImplementation.java
	src/main/java/net/semanticmetadata/lire/imageanalysis/mser/MSER.java
	src/main/java/net/semanticmetadata/lire/impl/GenericDocumentBuilder.java
	src/main/java/net/semanticmetadata/lire/impl/SimpleImageSearchHits.java
	src/main/java/net/semanticmetadata/lire/impl/VisualWordsImageSearcher.java
	src/main/java/net/semanticmetadata/lire/indexing/MetricSpacesInvertedListIndexing.java
	src/main/java/net/semanticmetadata/lire/indexing/tools/HashingIndexor.java
	src/main/java/net/semanticmetadata/lire/indexing/tools/Indexor.java
	src/main/java/net/semanticmetadata/lire/utils/FileUtils.java
	src/test/java/net/semanticmetadata/lire/CreateIndexTest.java
	src/test/java/net/semanticmetadata/lire/DocumentBuilderFactoryTest.java
	src/test/java/net/semanticmetadata/lire/GeneralTest.java
	src/test/java/net/semanticmetadata/lire/benchmarking/TestNister.java
	src/test/java/net/semanticmetadata/lire/filter/FilterTest.java
	src/test/java/net/semanticmetadata/lire/imageanalysis/bovw/VisualWordsTest.java
	src/test/java/net/semanticmetadata/lire/imageanalysis/sift/TestLocalFeatureHistogram.java
	src/test/java/net/semanticmetadata/lire/indexing/IndexVisualWordsTest.java
	src/test/java/net/semanticmetadata/lire/indexing/LocalitySensitiveHashingTest.java
	src/test/java/net/semanticmetadata/lire/indexing/MetricSpacesTest.java
	src/test/java/net/semanticmetadata/lire/utils/QuantizationUtilsTest.java
Upgraded to lucene 4.2.1 as in google code r101 changeset.