Also delay the creation of KMailPartAdaptor, which I overlooked in my previous commit.
Also delay the creation of KMailPartAdaptor, which I overlooked in my previous commit.

svn path=/trunk/KDE/kdepim/; revision=710345

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