Qt 5.1.0 Release SVG module won't build on Linux when using qt-zlib

Was trying to build on Linux from the source tarball with the following command-line on 64-bit Ubuntu Linux from within the shadow-build folder:

../5.1.0-src/configure -platform linux-g++-64 -release -force-debug-info -opensource -no-javascript-jit -qt-zlib -qt-libpng -qt-libjpeg -qt-sql-sqlite -qt-xcb -qt-pcre -qt-xkbcommon -gui -widgets -fontconfig -no-dbus -nomake examples -nomake demos -nomake tests -prefix /usr/local/Trolltech/Qt-5.1.0-64-local -confirm-license

The build halts with a link error missing the symbols from QtZlib.
To Fix, Edit the file ./qtsvg/src/svg/svg.pro:

Change Line 51 from:
INCLUDEPATH += $$[QT_INSTALL_HEADERS/get]/QtZlib
To:
INCLUDEPATH += $$[QT_INSTALL_HEADERS]/QtZlib

And then it builds correctly.