move ref count into msg meta, only 1 poinetr now.

lichao

2021-04-23 dc86ace85e437ecb8a2e728e4dce36d02bbb8a6e

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*.un~
build/
debug/
release/
Makefile
utest/utest
*.bak
gmon.out
*/bhshmq_center
*/help
*/bhshmqbox
*/bhshmq_status
.idea