zigzag causes TextScripts to be offset

[David Bobroff]

%% Setting the TrillSpanner style to zigzag causes
%% TextScripts on the same system prior to the spanner
%% to be offset upwards.

\version "2.11.55"

\score {
        \relative c' {
                c1^"text"
                \break
                c2^"text"
                c2_"text"
                \override TrillSpanner #'style = #'zigzag
                c\startTrillSpan
                c^"text"\stopTrillSpan
        }
}