qt: fix PIE build for qmake

Use the same patch as qt5 to fix qmake for qt4.

srcpkgs/qt/template

@@ -1,7 +1,7 @@
 # Template file for 'qt'
 pkgname=qt
 version=4.8.7
-revision=9
+revision=10
 _distname=qt-everywhere-opensource-src
 patch_args="-Np1"
 wrksrc=${_distname}-${version}
@@ -36,6 +36,11 @@ do_configure() {
 		_libdir=lib
 	fi
 
+	# qmake CFLAGS/LDFLAGS
+	sed -i -e '/outpath\/qmake\".*\"\$MAKE\")/s/)/ QMAKE_CFLAGS="$CFLAGS" QMAKE_CXXFLAGS="$CXXFLAGS" QMAKE_LFLAGS="$LDFLAGS" )/' \
+		-e 's/\(setBootstrapVariable\s\+\|EXTRA_C\(XX\)\?FLAGS=.*\)QMAKE_C\(XX\)\?FLAGS_\(DEBUG\|RELEASE\).*/:/' \
+		configure
+
 	QMAKE_CFLAGS="${CFLAGS}" \
 	QMAKE_CXXFLAGS="${CXXFLAGS}" \
 	QMAKE_LFLAGS="${LDFLAGS}" \