fread verbose message about quoting is fragmented

[MichaelChirico]

          > part of above message, perhaps difficult to translate out of context.

Good spot, there's a similar fragment below. It's a bit hard to pull apart exactly how we'd make this friendlier. I think the best bet is to make each fragment a standalone sentence. I'll want to read more carefully how exactly those show up in the verbose output. Filing as a separate issue so it's not lost, there's already a lot going on here.

Originally posted by @MichaelChirico in #6503 (comment)

data.table/src/fread.c

Line 1713 in 3734726

DTPRINT(_(" with %d fields using quote rule %d\n"), topNumFields, quoteRule);

data.table/src/fread.c

Line 1763 in 3734726

DTPRINT(_(" with %d lines of %d fields using quote rule %d\n"), topNumLines, topNumFields, topQuoteRule);