Windows: (n)make install does not adjust paths in .prl files

Just tried to compile (-static) and install the latest Qt 5.1.1 patch release from sources on Windows 8 x64 using VS2012 Desktop:

In a Visual Studio 2012 Command Prompt:

C:\qt\qt-...src-5.1.1> set QTDIR=C:\qt\qt-everywhere-enterprise-src-5.1.1
C:\qt\qt-...src-5.1.1> set PATH=%QTDIR%\qtbase\bin;%QTDIR%\gnuwin32\bin;%PATH%
C:\qt\qt-...src-5.1.1> set QMAKESPEC=win32-msvc2012

C:\qt\qt-...src-5.1.1> configure \
    -platform win32-msvc2012 \
    -prefix c:\qt\5.1.1-static \
    -static \
    -debug-and-release \
    -commercial \
    -qt-zlib \
    -no-incredibuild-xge \
    -mp \
    -directwrite \
    -no-compile-examples \
    -nomake examples \
    -skip qtwebkit-examples

The build with 'nmake' went smooth (many warnings though...), but the final 'nmake install' seems to be incomplete in several aspects:

1. most of the *.prl files in the installation target still have references to the source tree, especially variable QMAKE_PRL_LIBS.
2. several referenced/required dependent libraries are not installed. These are qtbase\lib\translator_* and qtbase\lib\preprocessor*
3. the debug information files (PDB) for the Qt libraries seem to be missing in the installation target directory (e.g. lib\vc110.pdb). I keep getting tons of errors of this sort when compiling a qmake project configured for debug platform:
   (freely translated from German):

      Library "debug\tappS.lib" and object "debug\tappS.exp" are created.
   Qt5PrintSupportd.lib(qpaintengine_alpha.obj) : warning LNK4099: PDB "vc110.pdb" was not found with "Qt5PrintSupportd.lib(qpaintengine_alpha.obj)" or at "c:\myproject\debug\vc110.pdb"; linking object as if no debug info.
   

To reproduce you must remove/rename the source-tree first and compile a Qt project in 'debug' mode with this static Qt installation.