interp: lconst_n

Signed-off-by: Jussi Virtanen <jussi.k.virtanen@gmail.com>
interp: lload_n

Signed-off-by: Jussi Virtanen <jussi.k.virtanen@gmail.com>
interp: lstore

Signed-off-by: Jussi Virtanen <jussi.k.virtanen@gmail.com>
interp: lstore_n

Signed-off-by: Jussi Virtanen <jussi.k.virtanen@gmail.com>
interp: ladd

Signed-off-by: Jussi Virtanen <jussi.k.virtanen@gmail.com>
interp: lsub, lmul, ldiv, and lrem

Signed-off-by: Jussi Virtanen <jussi.k.virtanen@gmail.com>
Merge pull request #15 from jvirtanen/features/long-instructions

Long instructions