libqt4: use new "strict mode" in fixPkgconfig.

This resolves an issue with incorrect pkgconfig files.

dev-qt/libqt4/libqt4-4.8.6.4.recipe

@@ -9,7 +9,7 @@ CHECKSUM_SHA256="83bb4d74ac48443936cb497a1b53dd5683800426e829f8767cd554905d45ac6
 SOURCE_DIR="qt4-4.8.6-haiku-4"
 LICENSE="GNU LGPL v2.1"
 COPYRIGHT="2014 Digia Plc and/or its subsidiary(-ies)."
-REVISION="3"
+REVISION="4"
 ARCHITECTURES="x86 ?x86_64"
 if [ $effectiveTargetArchitecture != x86_gcc2 ]; then
     # x86_gcc2 is fine as primary target architecture as long as we're building
@@ -194,7 +194,7 @@ BUILD()
 INSTALL()
 {
 	make install
-	fixPkgconfig
+	fixPkgconfig strict
 	mv -f $libDir/libQtDBus.la $developLibDir
 
 	cd src/3rdparty/haiku-tools/qsystray