Invalid TargetExt in QtCore.vcxproj and other vcxproj files created by configure.exe (Visual Studio 2010 error MSB3073)

Using qt-everywhere-opensource-src-4.8.3.tar.gz, we are unable to build Qt DLL's (QtCore, QtGui, etc.) from the Visual C++ 2010 solution file, "projects.sln", generated by configure.exe. When we tried to do so, we got warnings like this:

warning MSB8012: TargetPath(...\src\corelib\..\..\lib\QtCored44.dll) does not match the Linker's OutputFile property value (...\lib\QtCored4.dll).

And errors like this:

6>PostBuildEvent:
6> Description: Copy QtCored4.dll to ..\..\bin
6> The system cannot find the file specified.
error MSB3073: The command "copy "...\src\corelib\..\..\lib\QtCored44.dll"
"..\..\bin"

Clearly "QtCored44.dll" should have been "QtCored4.dll"! I think this is caused by an invalid specification of de XML tag 'TargetExt', in the vcxproj files generated by configure.exe. For example, in ...\src\corelib\QtCore.vcxproj (hereby attached):

<TargetExt Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">4.dll</TargetExt>

I think the version number ('4') should not be part of the TargetExt.

Note that we did not have any problem building the previous version of Qt (4.8.2) like this.