* Add function to check whether the new symbian build system is used
   to build a Qt version. This will be used to decide which parsers
   to use when building for symbian

A project of qt's size generates 13k of output. That's without cleaning
and a project which compiles mostly warning free. So expecting 50.000 of
output seems reasonable, might even be a little too low.

http://bugreports.qt.nokia.com/browse/QTCREATORBUG-1342

3ccc079c renamed ProjectNode::DeleteFile
to ProjectNode::EraseFile. Also rename the usage(s) of that key.

Explicitly close all views of the sidebar _before_ the core is
destructed. E.g. the bookmarks view tries to access the core in
it's destructor.

Some windows header have a define for DeleteFile.

Use the full path for folders to sort in the project tree.

For virtual folders ensure that the path ensures the sorting we want.

Reviewed-By: kkoehne

The special event filter probably shouldn't eat the enter key if we are
in the editing state.

http://bugreports.qt.nokia.com/browse/QTCREATORBUG-2015

They got kicked out when I added a custom style delegate.

Task-number: QTCREATORBUG-1666
Acked-by: aportale <alessandro.portale@trolltech.com>