Qnx: Update bar-descriptor templates

* Qt4: Remove unnecessary input and update the style to bb10dark.
* Qt5: Update the environment variables default values
to cover common use cases.
* Cascades: Remove unnecessary LD_LIBRARY_PATH input

Change-Id: I339ae02639621adf291f5d3c9a02a242460f0c39
Reviewed-by: David Kaspar <dkaspar@blackberry.com>
Reviewed-by: Fabian Bumberger <fbumberger@rim.com>
Android: Ensure that keytool outputs in english

Task-number: QTCREATORBUG-11417
Change-Id: Ie94e1b7c149feda9c25554b5eff5862498dda81d
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>