Task-Nr: QTCREATORBUG-2209

 * Make the name of the configuration about to be removed more visible.

 * Update the Qt name when entering the path to qmake via the text edit.
   Behaviour matches what used to happen when selecting qmake via
   the file browser now.

Task-number: QTCREATORBUG-2145

Do not save Qt versions without a qmake set. Makes no sense to keep
those.

Reviewed-By: Trust Me

This happened if the file is openned after the debugger has started

We don't want people modifying the shared component chain on a
const Context *.

It's used very often, so lazy computation (potentially in the gui
thread) was too expensive.

Reviewed-by: Kai Koehne

Task-number: QTCREATORBUG-2207

This should speed up the matching between the AST nodes and the debugIds

updateUses() has to be called for cursor position changes.

Done-with: Kai Koehne

Task-number: QTCREATORBUG-2208

Task-number: QTCREATORBUG-2125

 * Fix the GCC output parser misinterpreting "At top level" messages
   as Errors instead of a simple message.
 * Add unit test to cover this

Task-number: QTCREATORBUG-2202

Finally.

We may want to implement a proper Ui for this. Maybe not as modal
message box.

 * Add a small script that will generate a tasklist by running
   "git diff origin/master" and doing some simple checks on the
   newly added line.

   I run this script like that in the top level Qt creator
   source directory:
   while true; do scripts/mytasks.pl > qtcreator.tasks ; sleep 600 ; done

   This updates the tasklist every 10min. Qt Creator will detect the change
   and reload the list.

 * Automatically reload task lists.
 * Add task handler to stop the reloading
 * Add some really simple API for other plugins to use.

Reviewed-by: hjk