Add dependency on libpng-dev & libjpeg-dev

Without these some plugins aren't built, e.g. gloverlay.

Change-Id: If0c0218eb3b2d0e568a7194a885149b1c171c369
1 file changed
tree: 33e529ed667e04c2e973c2cbec1543aa4ba4249d
  1. debian/