CVS commit by tokoe: 

Added some 'const' stuff to increase performance


  M +43 -37    vcardtool.cpp   1.12
  M +1 -1      vcardparser/vcard.cpp   1.9
  M +1 -0      vcardparser/vcardline.cpp   1.13
  M +13 -11    vcardparser/vcardparser.cpp   1.19