Should fix crashing errors under musl 1.2

Signed-off-by: Rosen Penev <rosenp@gmail.com>
(cherry picked from commit e62158b6f8)

Added PKG_BUILD_PARALLEL for faster compilation.

Fixed license information.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

Addition of sqlite storage
Tracking of SMTP traffic instead of P2P traffic
Based on NethServer bandwidthd implementation

Signed-off-by: Jean-Michel lacroix <lacroix@lepine-lacroix.info>

Signed-off-by: Jean-Michel Lacroix lacroix@lepine-lacroix.info