Merge pull request #301 from raman-bt/develop

Added attribute TSK_ISDELETED to indicate that an artifact is recovered ...
set correct paramaters in prepared statements;

fixed a bug in Sleuthkitcase where prepared statements were not getting the correct paramaters set and hence reterning erroneous results
fixed win32 files to build all libs in x64
Merge pull request #304 from millmanorama/sql_paramaters_fix

set correct paramaters in prepared statements;
Made return values in DB code more consistent with enums and added more checks
Aut-1345: DB locked error when adding an image to a case.

The tags related functions do not close the resultset returned by SQL queries. This seems to lock the database and manifests in a D/B locked Error when a disk image is added.