[Kst] extragear/graphics/kst/kst

[Rick Chern]

SVN commit 443127 by rchern:

Double headed arrows and arrowhead scaling 

 M  +3 -1      kstgfxarrowmousehandler.cpp  
 M  +0 -1      kstgfxellipsemousehandler.cpp  
 M  +2 -3      kstgfxlinemousehandler.cpp  
 M  +8 -6      ksttoplevelview.cpp  
 M  +102 -29   kstviewarrow.cpp  
 M  +19 -3     kstviewarrow.h