Backport r955052 by smartins from trunk to the 4.2 branch:

Change the way resource local dir handles changes, this fixes some segfaults and avoids closing the calendar each time an incidence
is modified.

Review: http://reviewboard.kde.org/r/516/
CCBUG: 180221
CCBUG: 187595

svn path=/branches/KDE/4.2/kdepimlibs/; revision=960992