lots of use of Utils::FileSaver and Utils::FileReader

Task-number: QTCREATORBUG-1619

add/unify read error handling in all affected classes

this centralizes error reporting (in fact, in most cases it adds any in
the first place).

Task-number: QTCREATORBUG-1619

no need to pass in the current file name

this replaces the ever-repeating idiom block/save/unblock with a single
call.

the internal use of SaveFile ensures that we don't leave truncated
pre-existing files behind if the disk is full or something else bad
happens.

Task-number: QTCREATORBUG-1619

inspired by KSaveFile

no point in checking for file's existence before opening it - the
errorString is verbose enough.

it's only qWarning()s, but anyway ...

it doesn't change the emitting object

Conflicts:
	qtcreator.pri
	src/plugins/debugger/breakhandler.cpp
	src/plugins/qt4projectmanager/qtversionmanager.cpp

the executable dialog that pops up.

Reviewed-by: dt

Merge-request: 293
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>

Preventing the log view from popping up.

Task-number: QTCREATORBUG-4524
Reviewed-by: hjk

Task-number: QTCREATORBUG-4563
Reviewed-by: Leandro Melo <leandro.melo@nokia.com>

This should unbreak WINSCW support

Task-number: QTCREATORBUG-4560
Reviewed-by: Robert Loehning

Setting an empty expression on a value not defined in the model
crashed.

Task-number: QTCREATORBUG-4312

The touchnavigation code had been splitted for easier development.
But we do not want the wizard to generate those many files. The
Wizard takes care of that and merges all into one.

And have that entry removed by the wizard. REMOVE_NEXT_LINE
is now the keyword for line removal. INCLUDE_DEPLOYMENT_PRI
was replaced by REMOVE_NEXT_LINE.

Make the html5applicationviewer class much less cluttered by splitting out all
the touch navigation classes into separate files in a subdirectory.

This should make it much more maintainable.

Was returning the same as %{CurrentProject:FilePath}

Task-number: QTCREATORBUG-4533
Reviewed-by: Robert Loehning

Merge-request: 290
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>

... and have the project wizard update the available VCS.

Task-number: QTCREATORBUG-4423

This makes setting up VCS more discoverable.

Reviewed-by: Kai Koehne

Reviewed-by: Kai Koehne

Reviewed-by: Kai Koehne