Merge wxQT branch into the trunk.

This merges in the latest sources from GSoC 2014 wxQt project with just a few
minor corrections, mostly undoing wrong changes to common files in that branch
(results of a previous bad merge?) and getting rid of whitespace-only changes.
Also remove debug logging from wxGrid.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77455 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/readme.txt

@@ -54,6 +54,7 @@ There is some support for the following platforms:
 - Most Unix variants with X11
 - Most Unix variants with Motif/Lesstif
 - Most Unix variants with GTK+ 1.2
+- Most Unix variants with Qt 5 or newer
 
 Most popular C++ compilers are supported; see the install.txt
 file for each platform (available via docs/html/index.htm) and
@@ -114,9 +115,9 @@ application binaries. To answer a FAQ, you don't have to
 distribute any source if you wish to write commercial
 applications using wxWidgets.
 
-However, if you distribute wxGTK or wxMotif (with Lesstif)
+However, if you distribute wxGTK, wxQt or wxMotif (with Lesstif)
 version of your application, don't forget that it is linked
-against GTK+ (or Lesstif) which is covered by LGPL *without*
+against GTK+, Qt or Lesstif, which are covered by LGPL *without*
 exception notice and so is bound by its requirements.
 
 If you use TIFF image handler, please see src/tiff/COPYRIGHT
@@ -174,4 +175,4 @@ If you are looking for support, you can get it from
 
 Have fun!
 
-The wxWidgets Team, November 2013
+The wxWidgets Team, August 2014