The previous attempt to let rpm configuration support both db5 and db6
has a flaw that when the building host provides db6 without its header
the db_create test will false pass. This new patch addresses this issue
by test against the DB_VERSION_MAJOR macro value, which is defined in
both db5 and db6's header.
Signed-off-by: Yuanjie Huang <Yuanjie.Huang@windriver.com> Signed-off-by: Ross Burton <ross.burton@intel.com>