Reviewed-By: hunger

it's well within expectations that they do not exist at the time of
configuration (especially when shadow building).
additionally, keeping the validation info (macros and environment)
up-to-date would require a notification infrastructure which is just not
worth the effort.

DebuggerLanguageChooser is in utils, which is why we cannot directly open
the URL in the help plugin.

Avoid confusion with other debugging helpers.

Existing Directory checks for whether the directory exists, which
Directory does not. Also changes all existing PathChoosers from
Directory to ExistingDirectory as that does not change behaviour.

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

Reviewed-by: dt

Almost(*) all of the symbian and maemo specific code is now theoretically
moveable to a separate plugin. Thus making it possible to implement
new targets in a plugin.

(*) Noteable missing is the qtversion, which needs to be split up
per target too.

Also fixes
Task-Nr: QTCREATORBUG-2440

Reviewed-By: hunger
Reviewed-By: ck

 * 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

Reviewed-by: hjk

Turns out to be a oversight

Reviewed-By: hunger

Task-number: 2481

Reviewed-by: dt

do not inject SOURCEDIR and BUILDDIR into the environment of
build steps and run configurations any more.
instead, all custom executable paths, argument lists and working
directories now support the %{sourceDir} and %{buildDir} macros.
this approach is more elegant and more scalable.

get away from argument stringlists. instead, use native shell command
lines which support quoting/splitting, environment variable expansion
and redirections with well-understood semantics.

Task-number: QTCREATORBUG-542
Task-number: QTCREATORBUG-1564

there is no point in doing it, as it is equivalent with
m_userWorkingDirectory being non-empty.
this code is consistent with CMakeRunConfiguration.

This reverts commit ae6dbf36.

Acked-By: dt

This reverts commit b979d9f1.

Initial patch and idea by hunger.
Reviewed-By: hunger

Reviewed-By: ossi

Ups were wrong in the last commit

Ups were wrong

Reviewed-by: dt

Relative to the project's directory.

It was badly positioned esp. in OS X and Windows.