Add ability to enterpret "In-Reply-To" header in mailto urls.
Add ability to enterpret "In-Reply-To" header in mailto urls.

BUG: 122684

svn path=/trunk/KDE/kdepim/; revision=1042416

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