Convert SQLite3 to HNI

Summary: fixes #3965

Reviewed By: @ptarjan

Differential Revision: D1615600
Convert thread to HNI

Summary: fixes #3967

Reviewed By: @ptarjan

Differential Revision: D1615782
Convert XML to HNI

Summary: fixes #3971

Reviewed By: @ptarjan

Differential Revision: D1615864