structure: add BCountAVL (a wrapper around BAVL providing a version with BAVL_COUNT defined)
structure: add BCountAVL (a wrapper around BAVL providing a version with BAVL_COUNT defined)


LazyZhu/badvpn,linfengfeiye/badvpn,LazyZhu/badvpn,PowerOlive/badvpn,linfengfeiye/badvpn,linfengfeiye/badvpn,chrisballinger/badvpn,Git-Host/badvpn,binondord/badvpn,tempbottle/badvpn,PowerOlive/badvpn,LazyZhu/badvpn,LazyZhu/badvpn,Git-Host/badvpn,Git-Host/badvpn,tempbottle/badvpn,Git-Host/badvpn,linfengfeiye/badvpn,PowerOlive/badvpn,chrisballinger/badvpn,binondord/badvpn,binondord/badvpn,tempbottle/badvpn,binondord/badvpn,chrisballinger/badvpn,binondord/badvpn,chrisballinger/badvpn,tempbottle/badvpn,PowerOlive/badvpn,PowerOlive/badvpn,LazyZhu/badvpn,tempbottle/badvpn,linfengfeiye/badvpn,Git-Host/badvpn