IPv6 firewall rules can be incomplete when using PPP

start_firewall is called by both rc and ipv6-up. If these two calls overlap, it could cause the filter_rules_ipv6 to be incomplete, which causes loss of IPv6 connectivity (although ping works)
webui: Fixed unescaped quote that broke the PControl page on French and Italian locales
Merge pull request #705 from pinwing/ipv6

Sometimes IPv6 firewall rules are incomplete when using PPPoE (timing issue)
dropbear: Don't send SSH_MSG_UNIMPLEMENTED for keepalive responses (upstream  10eb218fb022f435d75fa6e8e6fc6234e66f31b9)
Bumped revision to 376.45 release
Update version.conf

revert to ASUS version numberation (my own)
Create extendno.conf

revert to ASUS version numberation (my own) revision mod4b2
Update Makefile

revert to ASUS version numberation (my own)
Update target.mak

add support to 8MB and 4MB flash rom routers Broadcom MIPS ASUS RT-N series
Update platform.mak

add, remove, replace components to support 8MB and 4MB flash rom routers
make HTTPS possible for non-USB routers
always enable AUTODICT even CIFS enabled
Update Makefile

same as previous commit - AUTODICT enabled
enable CROND even 4MB flash rom
always enable kernel size optimization
delete old and unnessesary blobs
add new blobs from 374.5517 for RT-N10U
add new blobs from 374.5517 for RT-N12D1
add new blobs from 374.4422 for RT-N14UHP
add new blobs from 374.5517 for RT-N16