Meta/Reintegrate: omit everything after $willdo verb

A typical entry in whats-cooking.txt begins with the description of
the topic, followed by "Will do what to this topic" declaration of
the decision (i.e. $willdo verb) and supplemental text to explain
the decision.  When we read such an entry to add to a merge log
message, we omit the line with "Will do what".

Instead, stop reading there to exclude the supplemental text from
the merge log.

Reintegrate

@@ -54,7 +54,7 @@ annotate_merge () {
 				}
 				next unless ($in_section && $in_desc);
 				next if (/Originally merged to '\''next'\'' on ([-0-9]+)/);
-				next if (wildo_match($_));
+				last if (wildo_match($_));
 				push @msg, "$_\n";
 			}
 			return ($in_section, @msg);