Fix WTableView::layoutChanged() regression
Several bug fixes and improvements:

    - fix layout updates after updating the config regression (topic 7739)
    - work around boost c++11 compile problem
    - fix cmake install prefix for wt_config.xml
    - fix regression caused by setting size when a scrollbar is present (which we don't understand really well)
    - more accurate handling of input/textarea elements in a layout manager
    - fixes for QNX: cleanup use of std:: namespace for libc functions
    - prevent propagation for menu
    - Dbo: added manual flushmode support
    - fix segfault in WTableView layoutChanged()
several minor bug fixes (test suite cleanups, widgetset mode, JWt)
can't have the date wrong
remove stale todo file (things were done)
Merge remote-tracking branch 'upstream/master'