build: Add a rule to check whether files are included in the public header
build: Add a rule to check whether files are included in the public header

Distrotech/libgdata,Pecisk/libgdata-gtasks,Distrotech/libgdata,Pecisk/libgdata,Pecisk/libgdata,Pecisk/libgdata,GNOME/libgdata,Distrotech/libgdata,pwithnall/libgdata,Pecisk/libgdata-gtasks,Pecisk/libgdata-gtasks,pwithnall/libgdata