Qnx: Use Utils::Environment for qnx environment

Change-Id: I499ca9be0abc15fc0c57847ff288e80612a536fe
Reviewed-by: Tobias Nätterlund <tobias.naetterlund@kdab.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
Qnx: Fixing Bar Descriptor XML file editor to provide editor actions

BarDescriptorEditorWidget is using TextEditorActionHandler class
to provide editor actions e.g. Undo, Redo, Cut, Copy, Paste accessible
from main menu and using shortcuts.

TextEditorActionHandler.resolveTextEditorWidget() virtual function is
added to all resolving TextEditorWidget for an Editor. This allows
to have IEditor->widget() to have non-BaseTextEditorWidget instances too.

Task-number: QTCREATORBUG-10040
Change-Id: I6f433fc307c13ef2b2a20c48e6473826f2619544
Reviewed-by: David Kaspar <dkaspar@blackberry.com>
Reviewed-by: David Schulz <david.schulz@digia.com>
Reviewed-by: Tobias Nätterlund <tobias.naetterlund@kdab.com>
Reviewed-by: Eike Ziller <eike.ziller@digia.com>
Reviewed-by: Nicolas Arnaud-Cormos <nicolas@kdab.com>
QNX: Refactor BlackBerryLogProcessRunner

This change introduce a separate class for running the slog2info
process, in order to be able to use that for pure QNX (non-BlackBerry)
devices.

Also moved from using QSsh::SshRemoteProcessRunner to use
ProcessExplorer::SshDeviceProcess for the tail/slog2info processes
instead.

Change-Id: If917bd2a1099800f1a7333639d674c8d1b16de7b
Reviewed-by: Mehdi Fekari <mfekari@blackberry.com>
Reviewed-by: David Kaspar <dkaspar@blackberry.com>
Reviewed-by: Nicolas Arnaud-Cormos <nicolas@kdab.com>