Refactor ToolChains in Qt Creator:
* Allow for several toolchains of the same type
* Be smarter wrt. guessing what kind of output a toolchain
produces. This allows us to eventually handle e.g. embedded
linux setups way better than before.
* Be smarter wrt. guessing what kind of environment a Qt version
needs.
* Improve auto-detection of toolchains a bit
* Decide on which debugger to use based on the kind of output
produced by the compiler.
* Add options page to configure toolchains
* Remove toolchain related options from the Qt version dialog
Reviewed-by: dt
* Move the environment model code to utils and export it
* rename the environmenteditmodel files to environmentwidget
(which is the class they actually contain)
Reviewed-by: dt
The mainFile property of QmlProject is the default file to run. People
have still the opportunity to override this in their run settings,
though.
The wizard generated code was updated accordingly. Note that this makes
projects generated by the wizard incompatible with QtCreator 2.1!
Task-number: QTCREATORBUG-3249
There are probably very little use cases where you want to start
from a clean environment, and there is no such thing as a Build
Environment (although we magically add some toolchain settings to
the environment).
