Backport r939859 by smartins from trunk to the 4.2 branch:
Backport r939859 by smartins from trunk to the 4.2 branch:

Undoing multiEntries was broken because mCurrentMultiEntry was never inserted into the stack.

All operations that make more than one change can be undone now (e.g. dissociate occurrence, move future occurrences, delete future
occurrences)

svn path=/branches/KDE/4.2/kdepim/; revision=939865

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