[ChangeLog][QtCore][QProcess] Added method
setCreateProcessArgumentsModifier to QProcess on Windows to enable
users to intercept and modify CreateProcess parameters.
With such a modifier, calling code can decide whether to inherit
handles, modify the STARTUPINFO struct, and pass its own
combination of process flags to CreateProcess.
Task-number: QTBUG-390
Task-number: QTBUG-6917
Task-number: QTBUG-9350
Task-number: QTBUG-24619
Change-Id: I14757dbbacfebb1c89f52402d36fba0ba9c45f3a
Reviewed-by: Björn Breitmeyer <bjoern.breitmeyer@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
068baa9bb6