Speed up checking of large dimap folders by about 15 to 20%, by parsing the digest by hand.
Speed up checking of large dimap folders by about 15 to 20%, by parsing the digest by hand.

svn path=/branches/kdepim/enterprise/kdepim/; revision=706026

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