postgres

Merge branch 'master' into iam3

Last minute Whitespace / Debug output cleansing before merge to mainline

Minor sanity check of error messages / display messages etc. before merging to mainline

IAM support now fetches hostname from -h argument of psql, which resolves Issue #35 . Currently we still don't support host provided within the dbname string, which is another issue ( #36 )

Rely on sizeof(typename) rather than sizeof(variable) in pqformat.h.