Current 4.8 git snapshots fail to build

Current 4.8 snapshots fail to build because the search path to webkit's static libraries is set incorrectly:

g++ -Wl,-rpath-link,/usr/src/ark/BUILD/qt/lib -m64 -Wl,-O1 -Wl,-rpath,/usr/src/ark/BUILD/qt/src/3rdparty/webkit/Source/lib -o tst_qwebframe .obj/release-static/tst_qwebframe.o .obj/release-static/qrc_tst_qwebframe.o -L/usr/src/ark/BUILD/qt/lib -L/usr/X11R6/lib64 -L/usr/src/ark/BUILD/qt/lib -lQtDeclarative -lQtScript -lQtSvg -L/usr/X11R6/lib64 -lQtSql -lQtXmlPatterns -lQtWebKit -L../../WebCore/release -L../../JavaScriptCore/release -lwebcore -L/usr/lib64/qt4/lib -lQtOpenGL -lGL -ljscore -lsqlite3 -lQtMultimediaKit -lQtSensors -lQtTest -lQtGui -ljpeg -lmng -ltiff -lpng -lEGL -lSM -lICE -lXi -lXrender -lXrandr -lXfixes -lXcursor -lXinerama -lfontconfig -lfreetype -lXext -lX11 -lQtNetwork -lssl -lcrypto -lQtCore -lz -lm -ldl -pthread -lgthread-2.0 -lrt -lglib-2.0 -lpthread -lXi -lXrender -lXrandr -lXfixes -lXcursor -lXinerama -lfontconfig -lfreetype -lXext -lX11 -lm
/usr/bin/ld: cannot find -lwebcore
/usr/bin/ld: cannot find -ljscore
collect2: ld returned 1 exit status
make[3]: *** [tst_qwebframe] Error 1
make[3]: Leaving directory `/usr/src/ark/BUILD/qt/src/3rdparty/webkit/Source/WebKit/qt/tests/qwebframe'