[PATCH] Allow forced new processes for KUniqueApplication

[Robert Knight]

Hello,

Konsole is a KUniqueApplication and uses only one process for all
instances.  This causes a problem where shells in a newly started
Konsole do not inherit their environment from the parent terminal and
debug output from the new instance does not appear in the parent
terminal.

What I would like to do is to force the creation of a new process when
Konsole is started from the terminal but share a single process for
instances created from a GUI (the start menu, ALT-F2 dialog etc.)

Attached is a patch for KUniqueApplication which overloads
KUniqueApplication::start() to take a set of flags to control how how
the new instance is created, including forcing the creation of a new
process if necessary.

Regards,
Robert.
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