Fixed build problem.
Updated examples with more complex index.
Added nice progress meter for index building.
Put in example code to look at qualities.
Added some demo code.
Changed VCF defaults to be more general.
Fixed negative num elements in VCF.
Renamed vcfdb to wormtable, and minor cleanup.
Moved VCF code into script and removed package.
Added the wtindex script.
Added command line infrastructure and basic indexing.
Tidied examples and improved read API.
Added command line options for test cases.
Added progress to vcf2wt and added CL interface.
Missing files from last commit.
Added DistinctValueIterator and high level code.
Added get_num_rows method for Indexes.
Added placeholders for the index tests.
Fixed flush bug in the progress meter.
Added the start of an example using genotypes.