replaced DATA_TYPE_* with CF_DATA_TYPE_* to fix trouble on solaris 11.1

Conflicts:

	libenv/sysinfo.c
	libenv/unix_iface.c
	libpromises/eval_context.c
	libpromises/evalfunction.c
	libpromises/expand.c
	libpromises/syntax.c
	libpromises/verify_vars.c
	tests/unit/variable_test.c