QMake generates invalid <PlatformToolSet> tag and wrong ToolsVersion attribute

Qmake generates invalid VisualStudio project file.

This is qmake output:

<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
<PlatformToolSet>v120</PlatformToolSet>
....

instead of the correct (see lower/upper case of "s"):

<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
<PlatformToolset>v120</PlatformToolset>
....

Also project header has invalid ToolsVersion="4.0" instead of ToolsVersion="12.0"

<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

These two bugs cause that it's not possible to use PVS Studio for analyzation of Qt application code.