Merge branch 'master' into DB1_C

Merge branch 'master' into DB1_C

* master: (33 commits)
  Final date increase for release
  Update regression test output
  Add progress meter for 'dbReorganize'; change final message
  Remove big loop of tests
  Reset 'on.exit' handler once temp database has been renamed
  Update reg test output
  Use tryCatch to suppress the warning message
  Be more careful when opening file connections to database
  These 'else' clauses don't appear to be necessary
  Use the same error message as RDS database
  Tweak error message in dbFetch; no need for tryCatch
  Update reg test output
  Clean up printing of error messages from tests
  Tweak printing of error messages in dbFetch and dbInsert
  Clean up printing of error messages from tests
  Make 'dbDelete' and 'dbUnlink' have invisible return status
  Document 'safe' argument for 'dbInsert'
  Add a 'safe' option for 'dbInsert' into RDS databases; default to TRUE
  Safer insert for RDS databases
  Remove incorrect comment
  ...

Conflicts:

	R/filehash-DB1.R
	inst/doc/filehash.pdf
	tests/reg-tests.Rout.save