Make "show" exit error instead of returning an error code.

Signed-off-by: Peter Jones <pjones@redhat.com>
Add guid manipulation functions.

Signed-off-by: Peter Jones <pjones@redhat.com>
Rename generic_next_variable_name.h -> generics.h

Because the other way was really long and annoying.

Signed-off-by: Peter Jones <pjones@redhat.com>
Move include of stdlib here for strtol()

Signed-off-by: Peter Jones <pjones@redhat.com>
Make eif_append_variable() be a thing.

Signed-off-by: Peter Jones <pjones@redhat.com>
Update makefiles for new functionality.

Signed-off-by: Peter Jones <pjones@redhat.com>