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

they are initialized from the build configuration upon construction

... instead of running a sed script over a lot of files on each
version increment.

Acked-By: dt

Task-Nr: QTCREATORBUG-2592

We don't actually need that.

That is get code completion without saving the file or building.

Task-Nr: QTCREATORBUG-1657

Should have been done earlier. 2.1.80 was burned in the pre-2.1.0->2.0.1
days, and we'd like to have odd subminor for 'working' and even subminor
numbers for pure cherry-picking release branches anyway.

Must be compiled during runtime - otherwise, the app may not work
with Qt that is compiled with another compiler.

Reviewed-by: hjk

Task-Nr: QTCREATORBUG-2382

Reviewed-By: Alessandro Portale

Ups were wrong in the last commit

Ups were wrong

Task-Nr: QTCREATORBUG-1130

Reviewed-by: dt

Set BUILDDIR and SOURCEDIR in the build environment.

Reviewed-by: dt

Relative to the project's directory.

Reviewed-by: dt

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

Give warnings about failures to be able to fix things/timeouts on
slow machines. Pass on arguments correctly on Windows.
Make sure processes are killed on timeouts.

The heuristic to detect generated files is pretty basic and tries to
match the filenames against 3 patterns.

Task-Nr: QTCREATORBUG-2077

Reviewed-by: dt

Task-Nr: QTCREATORBUG-2222

There's a UI in qml/customexec/cmake/qmake run configs for choosing the
debugger languages (C++ and QML). The default for all except .qmlproject
is only C++, so default debugging behavior is the same. However, if the
user wants to do simultaneous debugging with two languages, or only
debug QML, they can select the languages from Run Settings and it will
be remembered.

Reviewed-by: hunger

 * Fix all warnings about non-explicit constructors except for those
   in 3rdparty code.