start poll msg after cache fully created

to void when new msg come, cache still creating, no qqnumber can get,
makes crash (Felix Cat)

Signed-off-by: xiehuc <xiehuc@gmail.com>
update adium config

Signed-off-by: xiehuc <xiehuc@gmail.com>
 update changelog

Signed-off-by: xiehuc <xiehuc@gmail.com>
Merge branch 'master' of github.com:xiehuc/pidgin-lwqq