ebtables-restore: Table line to trigger implicit commit

ebtables-restore: Table line to trigger implicit commit

Cache code is suited for holding multiple tables' data at once. The only
users of that are xtables-save and ebtables-restore with its support for
multiple tables and lack of explicit COMMIT lines.

Remove the second user by introducing implicit commits upon table line
parsing. This would allow to make cache single table only, but then
xtables-save would fetch cache multiple times (once for each table) and
therefore lose atomicity with regards to the acquired kernel ruleset
image.

Signed-off-by: Phil Sutter <phil@nwl.cc>