configure.ac: target static compilation
configure.ac: target static compilation

For now building libopenemv as a shared library is not supported -- ABI
is not stable.

Signed-off-by: Dmitry Eremin-Solenikov <b6edad08270b2e4ffbcb0879e25a0e29a48c5275@gmail.com>

lumag/emv-tools