Correct taint code 64 description

Correcting the ambiguous description for taint code 64 from "user requested taint" to "unsigned kernel modules".
Relevant -> https://access.redhat.com/solutions/40594

Signed-off-by: Jake Hunsaker <jhunsake@redhat.com>
PEP8 corrections

Continuing with PEP8 corrections to styling.

Signed-off-by: Jake Hunsaker <jhunsake@redhat.com>
More efficient memory parsing and PEP8 corrections

Intialize the memInfo dict on instantiation instead of in each method.

Also correcting to PEP8 guidelines.

Signed-off-by: Jake Hunsaker <jhunsake@redhat.com>