Mode standalone: override database parameters from compile time
DB/Osmosis: Bugfix queries objects_by_id()
Mode Standalone: bugfix, assume empty args in CGI mode; also remove debug msgs
Mode standalone/Offline: null db connection; don't check db version
Compile SQL: value_format function, change return values (value, False, None)
DB/Osmosis: condition osm:user -> don't resolve in offline mode
Merge pull request #26 from plepe/compile-without-db-conn

Compile without db connection ?
DB/Osmosis: avoid problems with ways with invalid geometries
Explain queries
Misc: new function strip_includes; move code from db/db.py
Function Match: when including mode header/footer, strip includes
Mode Standalone: option 'explain_queries': print query info

- closes #76
Merge branch 'explain-queries' into branch-0.9
DB/Osmosis: remove obsolete TODOs
DB/*: autodetect srs of database; use default srs in offline mode
Internally work with DB SRS
Specify default (output) srs at compile time and convert to this
Use unit.srs for calculation of distances
Eval::to_dashes(): do not call plpy.warning -> error
Eval/Localization: adding tags name:en, name:de

- fix d4a9dbc1e2040155acfade2afb1e00f97673522f