update version for 4.2.3
update version for 4.2.3

svn path=/branches/KDE/4.2/kdepim/; revision=960468

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi