* include/FrameVisualDisk.h,
src/FrameVisualDisk.cc: improved the algorithm to deal with lost
pixels after seeing some problems with rather insane
partitiontables.
* src/Dialog_Partition_Info.cc: minor cleanup
* src/GParted_Core.cc: show error in partitioninfo if statvfs fails
* src/TreeView_Detail.cc: added FIXME