android: don't list android/hello/res/values for dist
android: don't list android/hello/res/values for dist

EXTRA_DIST should only include files so this removes the listing
of the android/hello/res/values directory.

Distrotech/cogl,djdeath/cogl,Distrotech/cogl,Distrotech/cogl,djdeath/cogl-android,collects/cogl,djdeath/cogl-android,djdeath/cogl,gcampax/cogl,gcampax/cogl,collects/cogl,Distrotech/cogl,djdeath/cogl-android,gcampax/cogl,djdeath/cogl,gcampax/cogl