Removing global variables bug in feed and refectoring Bxref.pm

Signed-off-by: Macartur de Sousa <macartur.sc@gmail.com>
Refectoring Bxref.pm and Bxref.t

Signed-off-by: Macartur de Sousa <macartur.sc@gmail.com>
Refectoring change global variables and removing (definitions)

Signed-off-by: Macartur de Sousa < macartur.sc@gmail.com >
Merge pull request #22 from macartur/tree

Reorganizing tree structure