Integrated pull request 129.
Merge branch 'patch_issue_124' of https://github.com/mmd-osm/Overpass-API into minor_issues
Dump global bounding boxes properly.
Merge branch 'patch_issue_74' of https://github.com/mmd-osm/Overpass-API into minor_issues
Initial prototype for CSV output mode. Supports only nodes, hardcoded separator char tab
CSV output for nodes, ways, relations; configurable headerline/separator
Adjusted parameter parsing for out:csv
corr whitespace
Merge remote-tracking branch 'upstream/minor_issues' into test752 + fix conflicts

Conflicts:
	html/output_formats.html
	src/overpass_api/statements/statement_dump.cc
Merge branch 'patch_print_target_csv' into test752 + merge conflict

Conflicts:
	src/overpass_api/frontend/map_ql_parser.cc