[Kst] kdeextragear-2/kst [POSSIBLY UNSAFE]

[George Staikos]

CVS commit by staikos: 

trace down lots more nasty locking issues and deadlocks, and get the regression
suite back to 100% passes again


  M +10 -0     TODO   1.19
  M +4 -4      kst/kstdataobject.cpp   1.25
  M +13 -11    kst/kstdoc.cpp   1.61
  M +6 -6      kst/kstiface_impl.cpp   1.18
  M +19 -0     kst/kstobject.h   1.21
  M +5 -5      kst/kstpsdcurve.cpp   1.26
  M +3 -5      kst/kstpsddialog_i.cpp   1.31
  M +3 -1      kst/kstvcurve.cpp   1.29
  M +26 -8     kst/rwlock.cpp   1.3 [POSSIBLY UNSAFE: printf]
  M +24 -30    kst/updatethread.cpp   1.4