Is more then twice as fast

The symbian makefile generator don't support shadow builds. Thus they
always pollute the source directory with build artefacts. Mixing
in-source and shadow builds is obviously broken.

We do as good as we can, setting OBJECTS_DIR, MOC_DIR, UI_DIR, RCC_DIR
to .obj, .moc, .ui and .rcc, which keeps the source dir clean of at least
some of the artefacts. This is as good as we can, but not really good.

Task-Nr: QTCREATORBUG-1293
(cherry picked from commit 33ef722b)

Reviewed-by: dt

 ... if it is part of the drive letter only.

This is needed to enable additional checks on the result.

Reviewed-by: dt

If SDK and Project were on te same drive but for some reason the drive
in the pathes had different cases, we had false alarms.

Made the comparision case insensitive as agreed with Tobias.

Reviewed-by: Tobias Hunger

It was searched in /include/stdapis/string.h

Added the /epoc32/ as agreed with Tobias.

Reviewed-by: Tobias Hunger

Tested on OSX, otherwise qmake will automatically append -macx which
results in Makefiles containing references to the host Qt libraries,
e.g. -lQtCore_debug etc...

Reviewed-by: dt

 * Check for symbian SDK and soureces being on the same drive on windows
 * Check for a Open C/C++ header in Symbian SDK and warn if that is not found
 * Check for chars in project name that might confuse symbian SDKs

Task-number: QTCREATORBUG-1045
Task-number: QTCREATORBUG-1043
Reviewed-by: dt

That is e.g. buildSteps() and cleanSteps() --> steps(type)

 * Do not use the BuildManager but have the qmakestep trigger
   the update via the target and project.

Reviewed-by: dt

 * 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

 * Use new BuildSteps interface (as seen in ProjectConfiguration).
 * Use new factory to construct/clone/restore them.

Reviewed-by: dt

They do what you expect them to do, that is build only a subtree.
The implementation is a little bit strange. We temporarly set the sub
node to be built on the BuildConfiguration, enqueue that
BuildConfiguration (which calls BuildStep::init()), and then reset that
temporary value.

A more general way would be to have the ability to extend
BuildConfiguration::buildProject() in a way that additional data can be
passed to the BuildSteps.

Task-Nr: QTCREATOR-5
Task-Nr: QTCREATORBUG-44

Task-Nr: QTCREATOR-269

Instead note that it is invalid if trying to build and on the projects
mode pane.

Task-Nr: QTCREATORBUG-459

  * 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

 * Rework IBuildParser:
    * Remove name() method.
    * Remove enterDirectory and leaveDirectory signals.
    * Allow chaining of parsers.
 * Rename IBuildParser to IOutputParser.
 * Implement GnuMakeParser.
    * Remove entering/leaving directory related code from all other parsers
    * Move filename fixup heuristic based on entering/leaving directory
      massages from gnumake here from AbstractMakeStep.
 * Add outputParser method to ToolChain: This removes the need to map
   toolchains to BuildParser names in the BuildSteps.
 * Enhance AbstractProcessStep to accept a IOutputParser to parse its output.
 * Remove AbstractMakeStep.
 * Set the appropriate Parsers in all classes deriving from AbstractProcessStep
   and append the ToolChain's parser to the parser chain.
 * Remove BuildParserFactories: There is no more need for them.
 * Remove constants used to identify the BuildParsers.
 * Clean up some names:
    * Replace stdOut with stdOutput.
    * Replace addToTaskWindow with addTask and addToOutputWindow with
      addOutput. Do this wherever it is not yet clear that this will end up
      in the Task/Output window.

Reviewed-by: dt

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.

Move the code that compares the Qt version's debug|release property
with the build configuration's debug|release property
to the new build configuration class.

Reviewed-by: dt

Also rename some methods/signal to make clearer that those only are
relevevant for user changes not for all arguments.

Rename arguments to allArguments(), qmakeArguments() to userArguments()