Test added for issue #177 (SqlJet fails to create DB larger than 2GB).

git-svn-id: http://svn.svnkit.com/repos/sqljet@1284 06c6b4df-3a75-4b2a-9d74-3e57e8079485
Fix for the LargerThan2GbTest, read and write offsets might not exceed integer boundaries.

git-svn-id: http://svn.svnkit.com/repos/sqljet@1285 06c6b4df-3a75-4b2a-9d74-3e57e8079485
Unused import removed.

git-svn-id: http://svn.svnkit.com/repos/sqljet@1286 06c6b4df-3a75-4b2a-9d74-3e57e8079485
Merged from trunk: fix for issue #177, SqlJet used to fail to create DB larger than 2GB.

git-svn-id: http://svn.svnkit.com/repos/sqljet@1287 06c6b4df-3a75-4b2a-9d74-3e57e8079485
Fix for issue 
SqlJet fails when creating DB larger than 2GbSqlJet fails when creating DB larger than 2Gb
http://code.google.com/p/sqljet/issues/detail?id=177


git-svn-id: http://svn.svnkit.com/repos/sqljet@1288 06c6b4df-3a75-4b2a-9d74-3e57e8079485