Add null pointer checking into the api calls for safety.
Merge branch 'master' of git://github.com/quinnj/SQLite.jl
Fix ResultSet on changes()
Rename Rows Updated to Rows Affected"
Merge branch 'master' of git://github.com/quinnj/SQLite.jl into UDFs

Conflicts:
	src/SQLite.jl
Better error catching in scalarfunc.

Not all errors have a msg field so use string(error) instead.