Reviewed-by: Roberto Raggi

Also removed TokenUnderCursor as it's functionality is in the token cache.

Reviewed-by: ckamm

This reverts commit c2393df0.

This should speed things up a bit, because before, the line was tokenized at
least 3 times.

It seems that the mime type db got pretty slow, and reordering files
can take minutes.

The Parentheses, TextBlockUserData and TextEditDocumentLayout classes
and their member function implementations were spread around the
BaseTextEditor class. Moving them to their own file to make the code a
bit better organized.

Reviewed-by: mae

Task-Nr: QTCREATORBUG-1151

Allow include paths with any suffix, and do some sanity check for
existence of paths.

Reviewed-by: Thorbjørn Lindeijer

Task-number: QTCREATORBUG-1102
Reviewed-by: Roberto Raggi

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

Reviewed-by: Friedemann Kleint

Introduce multithread-locking to Core::MimeDatabase as it is
invoked from the indexer thread to sort apart headers and sources.
Add a convenience to operate on a sequence to avoid locking for each
file.

foreach()-Loops.

Reviewed-by: Erik Verbruggen

In preparation for finding macro uses.

* Macro: add offset and length
* MacroUse: add line
* Document: add convenience functions for finding a macro definition, use
  or undefined use at a given location.

Reviewed-by: Erik Verbruggen

__stdcall for all compilers (MSVC and MinGW, possibly others may use it)
__w64 is MSVC only, deprecated there, but still used in some places

Reviewed-By: Roberto Raggi
(cherry picked from commit 5832c6b5)