A new 'isRealCharacter' flag is added into the 'Character' class
to distinguish real characters and charaters used as place holders.

The code is a bit ugly now. Should improve it later when the idea and
implementation are proven to be feasible and cause no regression.

CCBUG: 188528

Make LocalTabTitleFormat and RemoteTabTitleFormat in "Shell.profile" the same as in the "FALLBACK" profile.

This is a follow up of commit febd3c63
and c78e7e52 .

TODO:

It does not feel good to put some entries which are the same as in
the FALLBACK profile into Shell.profile. Maybe those entries should
be removed and FALLBACK profile should be marked as the parent of
Shell.profile explicitly.

BUG:286614
FIXED-IN:4.8

REVIEW:102976
BUG:279048
FIXED-IN:4.8

Make Konsole BiDi rendering enabled by default. Default Shell.profile
and also fallback profile are updated to have BidiRenderingEnabled set
to true by default.
AFAIK there is no reason not to have it on by default.  I don't see
any penalty code-wise.
BUG: 198169
FIXED-IN: 4.8

I'm not sure which form is the right one, but at least it should be
consistent.

"cat"ing binary files often crashes Konsole.  This patch checks the
indicies.
Note that there are tons of 'undecodable sequences' that also print
out.  These likely should not be displayed unless debugging.
BUG: 184964
FIXED-IN: 4.8

This reverts commit 05f8cc33.

The issue is that some of the color schemes are in the KDE3 format
and some in KDE4.  This close to 4.8, I'll revert and fix later.

BUG: 286205

It is generally a good idea to make it modeless in the future

This means that dialog will only block the current window, instead of
the whole application.

BUG:208229
FIXED-IN:4.8

Most code use the "const QString& text" form, instead of the "const
QString &text" form. So change the minority to be consistent with
the majority.

That would cause strange result. For example, run "konsole --workdir .",
then bash or zsh would report its current dir as "."

This is a follow up of commit 790e835c