Due to using QTextCursor::columnNumber() instead of
QTextCursor::positionInBlock(), a lot of code would not work correctly
when used with wrapped lines.

In addition, there was an issue with columnNumber() returning 0 right
after inserting a character before the last character of a line.

Reviewed-by: mae

Reviewed-by: ogoffart

Task-number: QTCREATORBUG-1501
Reviewed-by: Roberto Raggi

It was broken due to a leading space which was trimmed off, breaking the
begin and end positions. Instead, don't trim, but just make sure not to
add a leading space when it is not necessary.

Done-with: Christian Kamm <christian.d.kamm@nokia.com>
Task-number: QTCREATORBUG-1398

Task-number: QTCREATORBUG-1292

* Fix cv qualifiers being placed incorrectly.
* Fix nested pointer to array to pointer being printed incorrectly.
* Add autotest.

Task-number: QTCREATORBUG-1037

Done with: erikv

It introduced at least one new crash to do with recovering from parsing
errors.

Reviewed-by: Roberto Raggi

Task-number: QTCREATORBUG-807

Main reason is that find-usages and refactoring broke completely.
Second reason is that concurrent modification was done on the
children-list while deleting/destructing.

This reverts commit b0b95f88.

Patch by: Bill King

Done-with: Roberto Raggi

Fixed crash in FindUsages on a dirty file in a large project, which is saved
while the FindUsages is still running.

Fixes QTCREATORBUG-787

Reviewed-by: Erik Verbruggen

Task-number: QTCREATORBUG-577

call of overloaded ‘QString(int)’ is ambiguous

This reverts commit 2a59d2ae.

This reverts commit f4163b8b.

Because apparently, while designing the Objective-C language, somebody
thought it was a world-class idea to allow any white-space between the
'@' character and the subsequent keyword. With this fix, we now
correctly parse:
    @  dynamic
and:
    @
      selector
and:
    @"foo"
     "bar"
    @"mooze"
(This last one is 1 single string split over multiple lines.)
Wonderful, isn't it?

What we (and Clang) do not support, but what GCC supports is something
like:
   @"foo"@@  "bar"  @"mooze"  @@
which is equivalent to @"foobarmooze".