Pass around contents as string, saving repeated
invocation of FormWindowEditor::contents().
Remove dependency to FormWindowEditor.
Reviewed-by: dt <qtc-committer@nokia.com>

Reviewed-by: Oswald Buddenhagen

Correctly show
* Headers
   * C:\foo
instead of
* Headers
   * C:/foo

Doing it creates huge delays, because it resolves to a network path.
Also rename FolderNode::setFolderName to FolderNode::setDisplayName,
because that's the name of the property.

Task-number: QTCREATORBUG-695

And port the Qt4ProjectManager to use that API for synchronization
between editors and the .pro file tree.

Reviewed-By: con

suppressing the "~QX11PixmapData(): QPixmap objects must be destroyed
..." warning.

 * Ease cross device development by introducing 'targets' which
   group build- and runsettings that are valid for this one target

 Most of the kudos for the code review go to dt. Con, thorbjorn,
 ckandler and others did also review parts of this patch.

Reviewed-by: dt

QString: Use QChar/char where appropriate, do not use QString::null

This is in preparation of the addition of "targets" in the sense
of "platforms to develop for" into the codebase.

Reviewed-by: dt

QString: Use QChar where appropriate.

qmake doesn't, either

that way the file formatting is better preserved.

just parsing it (once ...) ought to be sufficient. we don't need to
validate the syntax beyond that anyway.

Use the filemanager instead

they were remnants of the pro editor, which was removed long time ago.
they were still used for automatic editing of pro files, but were
totally overengineered for that purpose (removed 1300 LOC, added 40).

QMake passes those headers directly to gcc, so the user doesn't need to
include themselves.

  * Use id() for methods returning a string used to represent
    some type of object.
  * Use displayName() for strings that are meant to be user
    visible.
  * Quieten some warnings while touching the files anyway.
  * Move Factories to their products in the plugins where that
    was not done before.

Reviewed-by: dt

Reviewed-By: Roberto Raggi <roberto.raggi@nokia.com>

no point in re-parsing them over and over during the scan of a bigger
project ...

shaves off another 20% of the loading time of Qt 4.6.

there is no point in throwing away and re-recreating invariant data over
and over ...

shaves off ~15% of the load time of Qt 4.6.

findProFileFor(), buildDir() and createProFileReader() make sense only
in relation with an actual pro file anyway, so move them there.

this is probably just as fast (still two allocs per insert), but it is
definitely more elegant.

Should fix a lot of corner cases, might introduce a few bugs.
Also rename functions/slots to be better named.

Generic Project Manager and CMake Project Manager are missing from this
patch.

...making use of the new code model features. Move code to
separate file. Make it possible to obtain path to generated
header file from project manager.

Note: I didn't fix all the connects and there are a few missing things.
This compiles, more work is coming.

Also move Designer::Internal::FormWindowEditor ->
Designer::FormWindowEditor.

The wrong category folder (like Sources/Headers) would be deleted from
the project tree, because all category folders had the same path.
The nodes' path is used everywhere for performance optimization.