Do not block "Run All Tests" by dialog
- always start a new test job without asking to kill running jobs
- disable the combo box in the launch config interface
By default, app jobs are compared by their executable name. If a new job name matches an old job, a dialog pops up to ask whether the old instance shall be killed. This blocks the "Run All Tests" function under some circumstances (for instance when "cmake" is used to invoke the test). The patch always makes a CTest-generated job run without asking the user.
BUG: 377639 FIXED-IN: 5.6.1