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/weatherdata/main.cpp

@@ -10,6 +10,7 @@
 //! \file
 //! \ingroup sampleweatherdata
 
+#include "blackmisc/directoryutils.h"
 #include "blackmisc/loghandler.h"
 #include "blackmisc/registermetadata.h"
 #include "reader.h"
@@ -26,6 +27,9 @@ using namespace BlackMisc::PhysicalQuantities;
 //! main
 int main(int argc, char *argv[])
 {
+#ifdef Q_OS_MAC
+    QCoreApplication::addLibraryPath(CDirectoryUtils::applicationDirectoryPath());
+#endif
     QCoreApplication a(argc, argv);
     BlackMisc::registerMetadata();
     CLogHandler::instance()->install(true);