transcr.: small fix w. metamark relocation

[BOberreither]

These relocation metamarks / their respective arrow-segs have some issues, some of which have good reasons (stemming from the reading version):
There is a pipe symbol and an extra line. Tried a workaround on page 5 (first occurrence), but I think it won't do any good. Goal would be: no pipe, no extra line, arrow inline (details below) and arrow in the margin.
One solution could be: Don't display anything for the metamark relocation, if it is connected to an arrow-seg. Just display two arrows for the seg, one in the margin left, one in the text flow. Watch out: This last arrow must not interfere with print text flow, but should be placed slightly to the left so it's in the indent-space. Let's try this and see if 2nd occurrence on page 5 works better then.
Also: On beginning of page 6 there should not be an arrow.

[babslgam]

sorry, referenced the wrong issue in the commit