Only build datadir.h after configure is run
Only build datadir.h after configure is run

Force building this file breaks make && sudo make install with NFS and
root squash.

Signed-off-by: Cole Robinson <7cd45ff6ad1fb7cf556a02797d774247851499f8@redhat.com>

emaste/netcf,battlemidget/deprecated-mingw32-netcf,hallyn/netcf,osier/netcf,seanbruno/fbsd-netcf,emaste/netcf,emaste/netcf,seanbruno/fbsd-netcf,hallyn/netcf,battlemidget/deprecated-mingw32-netcf,osier/netcf,seanbruno/fbsd-netcf,hallyn/netcf,osier/netcf