Made DumpDocVec more efficient
Changed integer shard ids into string shard ids.
off by one error for shard ids
Got rid of a warning in FeatureStore. Changed buildfrommap to build off
of internal document ids.
Removed corpusdb param in buildfrommap. Added a string length type to
make eclipse c++ analyzer happy.
Fixed buildfrommap issues.
Fixed memory leak in buildfrommap