Test passing conversion specifier as variable.
Upgrade mongo driver to 0.8
Increase batch size to reduce number of db connections.
Test adding web log formats.
Move variable assignments out of loop
Indenting.
Flush all fields to stdout.
Remove common/ncsa format. Using combined should ignore more or less input fields.
Merge branch 'handle_log_formats'

Conflicts:
	src/chopper.h