config.tests/arch: make distclean on the test, not qt

Additionally, qmake no longer needs -o since we are in the project
directory.

Change-Id: I89dbe829c064663b653e8f747f0849d63ceb367e
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>

config.tests/unix/arch.test

@@ -30,9 +30,9 @@ done
 
 # build a test program but don't run it
 test -d "$OUTDIR/config.tests/arch" || mkdir -p "$OUTDIR/config.tests/arch"
-[ -f Makefile ] && $MAKE distclean >/dev/null 2>&1
-OUTDIR=$OUTDIR "$OUTDIR/bin/qmake" -nocache -spec "$QMKSPEC" "QT_BUILD_TREE=$OUTDIR" "LIBS+=$LFLAGS" "QMAKE_CXXFLAGS+=$CXXFLAGS" "$SRCDIR/config.tests/arch/arch.pro" -o "$OUTDIR/config.tests/arch/Makefile" >/dev/null 2>&1 || echo "qmake is broken" >&2
 cd "$OUTDIR/config.tests/arch"
+[ -f Makefile ] && $MAKE distclean >/dev/null 2>&1
+OUTDIR=$OUTDIR "$OUTDIR/bin/qmake" -nocache -spec "$QMKSPEC" "QT_BUILD_TREE=$OUTDIR" "LIBS+=$LFLAGS" "QMAKE_CXXFLAGS+=$CXXFLAGS" "$SRCDIR/config.tests/arch/arch.pro" >/dev/null 2>&1 || echo "qmake is broken" >&2
 
 
 ARCH=""