Prior to this commit, if the u2mfn module had never been installed on
the system *via DKMS* before, then the "u2mfn_ver" variable would not be
populated properly, due to the reliance on "dkms status" which can only
detect currently installed DKMS modules.
Fix this issue by looking for u2mfn's DKMS configuration file in
/usr/src and and grep'ing for the module version.
Signed-off-by: M. Vefa Bicakci <m.v.b@runbox.com>
60016e230f