[Kst] Compile problems in matrixscriptinterface.cpp

[Nicholas Chapman]

I did a pull this morning to get the latest version of KST and
integrate it with the changes I made to the fitstable plugin.
Unfortunately, I can no longer compile KST!  The error messages are
both in matrixscriptinterface.cpp and pasted below.  Other possible
relevant information:
Mac OS X 10.6.8
Qt Creator 4.8.4
cmake version 2.8.11.1
g++ (GCC) 4.6.0 20100703
QMake version 2.01a
Using Qt version 4.8.4 in /Library/Frameworks

/Users/chapman/data1/Applications/kst-plot/src/libkst/matrixscriptinterface.cpp:129:
error: invalid operands of types 'QString
(Kst::DataMatrixSI::*)(QString&)' and 'QString
(Kst::MatrixCommonSI::*)(QString&)' to binary 'operator!='

/Users/chapman/data1/Applications/kst-plot/src/libkst/matrixscriptinterface.cpp:241:
error: invalid operands of types 'QString
(Kst::EditableMatrixSI::*)(QString&)' and 'QString
(Kst::MatrixCommonSI::*)(QString&)' to binary 'operator!='

Any suggestions?