Fix critical parse error

At least for me, this was what caused the critical problems with the tool, and caused (invisible to the user, I had to inject code to see this) exceptions like:

    java.lang.IllegalArgumentException: bad curve specifier string (e,12024,66.646 846.71,16.82 1125.7,11.177 1744,2.8422e-14 2265,0 2265,0 2265,0 10473,0 11026,4.2633e-14 11675,41.211 12014,65.902)
        at att.grappa.GrappaLine.updateLine(GrappaLine.java:326)
        at att.grappa.GrappaLine.<init>(GrappaLine.java:93)

Testing it, it seems to "work" now. Note that there are many threading issues remaining, but since Eclipse magically handles them quite gracefully, this only causes many entries in the Error Log.

I couldn't find any documentation how to create the next "update", thus there are still things missing in `/ccs/rcp` and `/ccs/updatesite`.
I'd like to ask you to create the next version and push it, so the other students can finally use the Eclipse dot tool.