liblinear: new package

Signed-off-by: Romain Naour <romain.naour@openwide.fr>
Cc: "Yann E. MORIN" <yann.morin.1998@free.fr>
[yann.morin.1998@free.fr: add ability to build a static lib; handle
static-only and static+shared cases]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>