Add <swiftInstall>/bin to library lookup paths

Summary:
This change adds <swiftInstall>/bin to the library lookup paths.
Without, QFactoryLoader is not able to find the Qt plugins
on Mac OS since on this platform the hard coded path defaults to
'foo.app/Contents/MacOS' for app bundles.
This change also adds the installation of QtPrintSupport framework which
is a dependency from cocoa platform plugin.

ref T48

Reviewers: kbasan, msutcliffe

Reviewed By: kbasan

Subscribers: jenkins

Maniphest Tasks: T48

Differential Revision: https://dev.swift-project.org/D15

samples/blackmiscdbus/main.cpp

@@ -11,6 +11,7 @@
 //! \ingroup sampleblackmiscdbus
 
 #include "blackmisc/dbusserver.h"
+#include "blackmisc/directoryutils.h"
 #include "blackmisc/registermetadata.h"
 #include "blackmisc/network/networkutils.h"
 #include "blackmisc/dbusutils.h"
@@ -28,6 +29,8 @@
 #include <Qt>
 #include <QtDebug>
 
+using namespace BlackMisc;
+
 //! main
 int main(int argc, char *argv[])
 {
@@ -35,6 +38,9 @@ int main(int argc, char *argv[])
     // is just for testing, I did not split it up
 
     BlackMisc::registerMetadata();
+#ifdef Q_OS_MAC
+    QCoreApplication::addLibraryPath(CDirectoryUtils::applicationDirectoryPath());
+#endif
     QCoreApplication a(argc, argv);
     QTextStream out(stdout, QIODevice::WriteOnly);
     QTextStream qtin(stdin);