It fails during compiling

```CMakeFiles/MantidPlot.dir/src/ApplicationWindow.cpp.o: In function `ApplicationWindow::saveFolder(Folder*, QString const&, bool)':
ApplicationWindow.cpp:(.text+0xa2f1e): undefined reference to `file_compress'
CMakeFiles/MantidPlot.dir/src/ApplicationWindow.cpp.o: In function `ApplicationWindow::appendProject(QString const&, Folder*)':
ApplicationWindow.cpp:(.text+0xa5bc5): undefined reference to `file_uncompress'
CMakeFiles/MantidPlot.dir/src/ApplicationWindow.cpp.o: In function `ApplicationWindow::open(QString const&, bool, bool)':
ApplicationWindow.cpp:(.text+0xb421c): undefined reference to `file_uncompress'
collect2: ld returned 1 exit status
make[2]: *** [bin/MantidPlot] Error 1```