build: Don't distribute clutter-version.h and cogl-defines.h
build: Don't distribute clutter-version.h and cogl-defines.h

As with a351ff2af earlier, distributing headers generated at configure
time conflicts with out of tree builds as the distributed headers will
be included first instead of including the generated ones.

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