print version for every standalone grabber and hyperiond

Former-commit-id: 736894a87ba3d056a8e4f1def236ae4670f16407

src/hyperion-v4l2/hyperion-v4l2.cpp

@@ -24,6 +24,8 @@
 #include "PixelFormatParameter.h"
 #include "ScreenshotHandler.h"
 
+#include "HyperionConfig.h"
+
 using namespace vlofgren;
 
 // save the image as screenshot
@@ -36,6 +38,11 @@ void saveScreenshot(void *, const Image<ColorRgb> & image)
 
 int main(int argc, char** argv)
 {
+  std::cout
+    << "hyperion-v4l2:" << std::endl
+    << "\tversion   : " << HYPERION_VERSION_ID << std::endl
+    << "\tbuild time: " << __DATE__ << " " << __TIME__ << std::endl;
+
     QCoreApplication app(argc, argv);
 
     // force the locale